Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
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This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43536)\n\n - An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory\n leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR <\n 91.4.0, and Firefox < 95. (CVE-2021-43537)\n\n - By misusing a race in our notification code, an attacker could have forcefully hidden the notification for\n pages that had received full screen and pointer lock access, which could have been used for spoofing\n attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43538)\n\n - Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC\n occurring within the call not tracing those live pointers. This could have led to a use-after-free causing\n a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0,\n and Firefox < 95. (CVE-2021-43539)\n\n - When invoking protocol handlers for external protocols, a supplied parameter URL containing spaces was not\n properly escaped. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43541)\n\n - Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages\n for loading external protocols. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and\n Firefox < 95. (CVE-2021-43542)\n\n - Documents loaded with the CSP sandbox directive could have escaped the sandbox's script restriction by\n embedding additional content. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and\n Firefox < 95. (CVE-2021-43543)\n\n - Using the Location API in a loop could have caused severe application hangs and crashes. 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This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43536)\n\n - An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43537)\n\n - By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43538)\n\n - Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers. This could have led to a use-after-free causing a potentially exploitable crash. 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This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-38503)\n\n - When interacting with an HTML input element's file picker dialog with webkitdirectory set, a use-after- free could have resulted, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-38504)\n\n - Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-38506)\n\n - The Opportunistic Encryption feature of HTTP2 (RFC 8164) allows a connection to be transparently upgraded to TLS while retaining the visual properties of an HTTP connection, including being same-origin with unencrypted connections on port 80. However, if a second encrypted port on the same IP address (e.g. port 8443) did not opt-in to opportunistic encryption; a network attacker could forward a connection from the browser to port 443 to port 8443, causing the browser to treat the content of port 8443 as same-origin with HTTP. This was resolved by disabling the Opportunistic Encryption feature, which had low usage. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-38507)\n\n - By displaying a form validity message in the correct location at the same time as a permission prompt (such as for geolocation), the validity message could have obscured the prompt, resulting in the user potentially being tricked into granting the permission. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-38508)\n\n - Due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary (although unstyled) contents could be displayed over top an uncontrolled webpage of the attacker's choosing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.\n (CVE-2021-38509)\n\n - Mozilla developers and community members reported memory safety bugs present in Firefox 93 and Firefox ESR 91.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-43534)\n\n - A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-43535)\n\n - Under certain circumstances, asynchronous functions could have caused a navigation to fail but expose the target URL. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43536)\n\n - An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43537)\n\n - By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43538)\n\n - Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43539)\n\n - When invoking protocol handlers for external protocols, a supplied parameter URL containing spaces was not properly escaped. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43541)\n\n - Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages for loading external protocols. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43542)\n\n - Documents loaded with the CSP sandbox directive could have escaped the sandbox's script restriction by embedding additional content. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43543)\n\n - Using the Location API in a loop could have caused severe application hangs and crashes. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43545)\n\n - It was possible to recreate previous cursor spoofing attacks against users with a zoomed native cursor.\n This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. 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'91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-pa-in', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-pl', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-pt-br', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-pt-pt', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-rm', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-ro', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-ru', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-si', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-sk', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-sl', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-son', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-sq', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-sr', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-sv-se', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-ta', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-te', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-th', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-tl', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-tr', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-trs', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-uk', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-ur', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-uz', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-vi', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-xh', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-zh-cn', 'reference': '91.4.1esr-1~deb11u1'},\n {'release': '11.0', 'prefix': 'iceweasel-l10n-zh-tw', 'reference': '91.4.1esr-1~deb11u1'}\n];\n\nvar flag = 0;\nforeach package_array ( pkgs ) {\n var release = NULL;\n var prefix = NULL;\n var reference = NULL;\n if (!empty_or_null(package_array['release'])) release = package_array['release'];\n if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];\n if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];\n if (release && prefix && reference) {\n if (deb_check(release:release, prefix:prefix, reference:reference)) flag++;\n }\n}\n\nif (flag)\n{\n security_report_v4(\n port : 0,\n severity : SECURITY_HOLE,\n extra : deb_report_get()\n );\n exit(0);\n}\nelse\n{\n var tested = deb_pkg_tests_get();\n if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);\n else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'firefox-esr / firefox-esr-l10n-ach / firefox-esr-l10n-af / etc');\n}\n", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2023-09-27T15:48:48", "description": "The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2863 advisory.\n\n - The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-38503)\n\n - When interacting with an HTML input element's file picker dialog with webkitdirectory set, a use-after- free could have resulted, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-38504)\n\n - Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-38506)\n\n - The Opportunistic Encryption feature of HTTP2 (RFC 8164) allows a connection to be transparently upgraded to TLS while retaining the visual properties of an HTTP connection, including being same-origin with unencrypted connections on port 80. However, if a second encrypted port on the same IP address (e.g. port 8443) did not opt-in to opportunistic encryption; a network attacker could forward a connection from the browser to port 443 to port 8443, causing the browser to treat the content of port 8443 as same-origin with HTTP. This was resolved by disabling the Opportunistic Encryption feature, which had low usage. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-38507)\n\n - By displaying a form validity message in the correct location at the same time as a permission prompt (such as for geolocation), the validity message could have obscured the prompt, resulting in the user potentially being tricked into granting the permission. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-38508)\n\n - Due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary (although unstyled) contents could be displayed over top an uncontrolled webpage of the attacker's choosing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.\n (CVE-2021-38509)\n\n - Mozilla developers and community members reported memory safety bugs present in Firefox 93 and Firefox ESR 91.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-43534)\n\n - A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-43535)\n\n - Under certain circumstances, asynchronous functions could have caused a navigation to fail but expose the target URL. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43536)\n\n - An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43537)\n\n - By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43538)\n\n - Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43539)\n\n - When invoking protocol handlers for external protocols, a supplied parameter URL containing spaces was not properly escaped. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43541)\n\n - Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages for loading external protocols. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43542)\n\n - Documents loaded with the CSP sandbox directive could have escaped the sandbox's script restriction by embedding additional content. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43543)\n\n - Using the Location API in a loop could have caused severe application hangs and crashes. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43545)\n\n - It was possible to recreate previous cursor spoofing attacks against users with a zoomed native cursor.\n This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43546)\n\nNote that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.", "cvss3": {}, "published": "2021-12-29T00:00:00", "type": "nessus", "title": "Debian DLA-2863-1 : firefox-esr - LTS security update", "bulletinFamily": "scanner", "cvss2": {}, "cvelist": ["CVE-2021-38503", "CVE-2021-38504", "CVE-2021-38506", "CVE-2021-38507", "CVE-2021-38508", "CVE-2021-38509", "CVE-2021-43534", "CVE-2021-43535", "CVE-2021-43536", "CVE-2021-43537", "CVE-2021-43538", "CVE-2021-43539", "CVE-2021-43541", "CVE-2021-43542", "CVE-2021-43543", "CVE-2021-43545", "CVE-2021-43546"], "modified": "2022-03-17T00:00:00", "cpe": ["p-cpe:/a:debian:debian_linux:firefox-esr", "p-cpe:/a:debian:debian_linux:firefox-esr-dev", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ach", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-af", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-all", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-an", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ar", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-as", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ast", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-az", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-be", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-bg", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-bn", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-bn-bd", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-bn-in", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-br", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-bs", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ca", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ca-valencia", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-cak", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-cs", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-cy", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-da", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-de", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-dsb", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-el", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-en-ca", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-en-gb", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-en-za", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-eo", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-es-ar", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-es-cl", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-es-es", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-es-mx", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-et", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-eu", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-fa", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ff", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-fi", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-fr", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-fy-nl", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ga-ie", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-gd", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-gl", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-gn", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-gu-in", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-he", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-hi-in", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-hr", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-hsb", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-hu", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-hy-am", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ia", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-id", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-is", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-it", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ja", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ka", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-kab", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-kk", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-km", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-kn", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ko", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-lij", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-lt", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-lv", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-mai", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-mk", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ml", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-mr", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ms", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-my", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-nb-no", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-ne-np", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-nl", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-nn-no", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-oc", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-or", "p-cpe:/a:debian:debian_linux:firefox-esr-l10n-pa-in", 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vulnerabilities as referenced in the USN-5246-1 advisory.\n\n - Thunderbird unexpectedly enabled JavaScript in the composition area. The JavaScript execution context was limited to this area and did not receive chrome-level privileges, but could be used as a stepping stone to further an attack with other vulnerabilities. This vulnerability affects Thunderbird < 91.4.0.\n (CVE-2021-43528)\n\n - Under certain circumstances, asynchronous functions could have caused a navigation to fail but expose the target URL. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43536)\n\n - An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43537)\n\n - By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43538)\n\n - Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43539)\n\n - When invoking protocol handlers for external protocols, a supplied parameter URL containing spaces was not properly escaped. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43541)\n\n - Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages for loading external protocols. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43542)\n\n - Documents loaded with the CSP sandbox directive could have escaped the sandbox's script restriction by embedding additional content. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43543)\n\n - Using the Location API in a loop could have caused severe application hangs and crashes. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43545)\n\n - It was possible to recreate previous cursor spoofing attacks against users with a zoomed native cursor.\n This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43546)\n\n - The olm_session_describe function in Matrix libolm before 3.2.7 is vulnerable to a buffer overflow. The Olm session object represents a cryptographic channel between two parties. Therefore, its state is partially controllable by the remote party of the channel. Attackers can construct a crafted sequence of messages to manipulate the state of the receiver's session in such a way that, for some buffer sizes, a buffer overflow happens on a call to olm_session_describe. Furthermore, safe buffer sizes were undocumented. The overflow content is partially controllable by the attacker and limited to ASCII spaces and digits. The known affected products are Element Web And SchildiChat Web. (CVE-2021-44538)\n\nNote that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.", "cvss3": {}, "published": "2022-01-22T00:00:00", "type": "nessus", "title": "Ubuntu 21.10 : Thunderbird vulnerabilities (USN-5246-1)", "bulletinFamily": "scanner", "cvss2": {}, "cvelist": ["CVE-2021-4126", "CVE-2021-4129", "CVE-2021-4140", "CVE-2021-43528", "CVE-2021-43536", "CVE-2021-43537", "CVE-2021-43538", "CVE-2021-43539", "CVE-2021-43541", "CVE-2021-43542", "CVE-2021-43543", "CVE-2021-43545", "CVE-2021-43546", "CVE-2021-44538", "CVE-2022-22737", "CVE-2022-22738", "CVE-2022-22739", "CVE-2022-22740", "CVE-2022-22741", "CVE-2022-22742", "CVE-2022-22743", "CVE-2022-22745", "CVE-2022-22747", "CVE-2022-22748", "CVE-2022-22751"], "modified": "2023-07-10T00:00:00", "cpe": ["cpe:/o:canonical:ubuntu_linux:21.10", "p-cpe:/a:canonical:ubuntu_linux:thunderbird", "p-cpe:/a:canonical:ubuntu_linux:thunderbird-dev", 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'1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-et', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-eu', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-fa', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-fi', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-fr', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-fy', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-fy-nl', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-ga', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-ga-ie', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-gd', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-gl', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-he', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-hr', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-hsb', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-hu', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-hy', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-id', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-is', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-it', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-ja', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-ka', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-kab', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-kk', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-ko', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-lt', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-lv', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-mk', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-ms', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-nb', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-nb-no', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-nl', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-nn', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-nn-no', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-pa', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-pa-in', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-pl', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-pt', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-pt-br', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-pt-pt', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-rm', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-ro', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-ru', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-si', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-sk', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-sl', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-sq', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-sr', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-sv', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-sv-se', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-ta', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-ta-lk', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-th', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-tr', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-uk', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-uz', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-vi', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-zh-cn', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-zh-hans', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-zh-hant', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-locale-zh-tw', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'thunderbird-mozsymbols', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'xul-ext-calendar-timezones', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'xul-ext-gdata-provider', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'},\n {'osver': '21.10', 'pkgname': 'xul-ext-lightning', 'pkgver': '1:91.5.0+build1-0ubuntu0.21.10.1'}\n];\n\nvar flag = 0;\nforeach package_array ( pkgs ) {\n var osver = NULL;\n var pkgname = NULL;\n var pkgver = NULL;\n if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];\n if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];\n if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];\n if (osver && pkgname && pkgver) {\n if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;\n }\n}\n\nif (flag)\n{\n security_report_v4(\n port : 0,\n severity : SECURITY_HOLE,\n extra : ubuntu_report_get()\n );\n exit(0);\n}\nelse\n{\n var tested = ubuntu_pkg_tests_get();\n if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);\n else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'thunderbird / thunderbird-dev / thunderbird-gnome-support / etc');\n}\n", "cvss": {"score": 0.0, "vector": "NONE"}}, {"lastseen": "2023-09-25T14:46:53", "description": "The remote Debian 10 / 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5034 advisory.\n\n - During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93. (CVE-2021-38496)\n\n - Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 78.15, Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93. (CVE-2021-38500)\n\n - Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection. A MITM could perform a downgrade attack to intercept transmitted messages, or could take control of the authenticated session to execute SMTP commands chosen by the MITM. If an unprotected authentication method was configured, the MITM could obtain the authentication credentials, too. This vulnerability affects Thunderbird < 91.2. (CVE-2021-38502)\n\n - The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-38503)\n\n - When interacting with an HTML input element's file picker dialog with webkitdirectory set, a use-after- free could have resulted, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-38504)\n\n - Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning to the user. This could lead to spoofing attacks on the browser UI including phishing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-38506)\n\n - The Opportunistic Encryption feature of HTTP2 (RFC 8164) allows a connection to be transparently upgraded to TLS while retaining the visual properties of an HTTP connection, including being same-origin with unencrypted connections on port 80. However, if a second encrypted port on the same IP address (e.g. port 8443) did not opt-in to opportunistic encryption; a network attacker could forward a connection from the browser to port 443 to port 8443, causing the browser to treat the content of port 8443 as same-origin with HTTP. This was resolved by disabling the Opportunistic Encryption feature, which had low usage. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-38507)\n\n - By displaying a form validity message in the correct location at the same time as a permission prompt (such as for geolocation), the validity message could have obscured the prompt, resulting in the user potentially being tricked into granting the permission. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-38508)\n\n - Due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary (although unstyled) contents could be displayed over top an uncontrolled webpage of the attacker's choosing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.\n (CVE-2021-38509)\n\n - Thunderbird unexpectedly enabled JavaScript in the composition area. The JavaScript execution context was limited to this area and did not receive chrome-level privileges, but could be used as a stepping stone to further an attack with other vulnerabilities. This vulnerability affects Thunderbird < 91.4.0.\n (CVE-2021-43528)\n\n - Mozilla developers and community members reported memory safety bugs present in Firefox 93 and Firefox ESR 91.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-43534)\n\n - A use-after-free could have occured when an HTTP2 session object was released on a different thread, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-43535)\n\n - Under certain circumstances, asynchronous functions could have caused a navigation to fail but expose the target URL. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43536)\n\n - An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43537)\n\n - By misusing a race in our notification code, an attacker could have forcefully hidden the notification for pages that had received full screen and pointer lock access, which could have been used for spoofing attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43538)\n\n - Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC occurring within the call not tracing those live pointers. This could have led to a use-after-free causing a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43539)\n\n - When invoking protocol handlers for external protocols, a supplied parameter URL containing spaces was not properly escaped. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43541)\n\n - Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages for loading external protocols. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43542)\n\n - Documents loaded with the CSP sandbox directive could have escaped the sandbox's script restriction by embedding additional content. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43543)\n\n - Using the Location API in a loop could have caused severe application hangs and crashes. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43545)\n\n - It was possible to recreate previous cursor spoofing attacks against users with a zoomed native cursor.\n This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43546)\n\n - The olm_session_describe function in Matrix libolm before 3.2.7 is vulnerable to a buffer overflow. The Olm session object represents a cryptographic channel between two parties. Therefore, its state is partially controllable by the remote party of the channel. Attackers can construct a crafted sequence of messages to manipulate the state of the receiver's session in such a way that, for some buffer sizes, a buffer overflow happens on a call to olm_session_describe. Furthermore, safe buffer sizes were undocumented. The overflow content is partially controllable by the attacker and limited to ASCII spaces and digits. The known affected products are Element Web And SchildiChat Web. 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This vulnerability affects Thunderbird < 78.15,\n Thunderbird < 91.2, Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93. (CVE-2021-38496)\n\n - Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1. Some of these\n bugs showed evidence of memory corruption and we presume that with enough effort some of these could have\n been exploited to run arbitrary code. This vulnerability affects Thunderbird < 78.15, Thunderbird < 91.2,\n Firefox ESR < 91.2, Firefox ESR < 78.15, and Firefox < 93. (CVE-2021-38500)\n\n - Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection. A MITM could\n perform a downgrade attack to intercept transmitted messages, or could take control of the authenticated\n session to execute SMTP commands chosen by the MITM. If an unprotected authentication method was\n configured, the MITM could obtain the authentication credentials, too. This vulnerability affects\n Thunderbird < 91.2. 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This vulnerability affects Thunderbird < 91.4.0.\n (CVE-2021-43528)\n\n - Mozilla developers and community members reported memory safety bugs present in Firefox 93 and Firefox ESR\n 91.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some\n of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 94,\n Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-43534)\n\n - A use-after-free could have occured when an HTTP2 session object was released on a different thread,\n leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93,\n Thunderbird < 91.3, and Firefox ESR < 91.3. (CVE-2021-43535)\n\n - Under certain circumstances, asynchronous functions could have caused a navigation to fail but expose the\n target URL. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43536)\n\n - An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory\n leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR <\n 91.4.0, and Firefox < 95. (CVE-2021-43537)\n\n - By misusing a race in our notification code, an attacker could have forcefully hidden the notification for\n pages that had received full screen and pointer lock access, which could have been used for spoofing\n attacks. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43538)\n\n - Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC\n occurring within the call not tracing those live pointers. This could have led to a use-after-free causing\n a potentially exploitable crash. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0,\n and Firefox < 95. (CVE-2021-43539)\n\n - When invoking protocol handlers for external protocols, a supplied parameter URL containing spaces was not\n properly escaped. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.\n (CVE-2021-43541)\n\n - Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages\n for loading external protocols. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and\n Firefox < 95. (CVE-2021-43542)\n\n - Documents loaded with the CSP sandbox directive could have escaped the sandbox's script restriction by\n embedding additional content. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and\n Firefox < 95. (CVE-2021-43543)\n\n - Using the Location API in a loop could have caused severe application hangs and crashes. This\n vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43545)\n\n - It was possible to recreate previous cursor spoofing attacks against users with a zoomed native cursor.\n This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95. (CVE-2021-43546)\n\n - The olm_session_describe function in Matrix libolm before 3.2.7 is vulnerable to a buffer overflow. The\n Olm session object represents a cryptographic channel between two parties. Therefore, its state is\n partially controllable by the remote party of the channel. Attackers can construct a crafted sequence of\n messages to manipulate the state of the receiver's session in such a way that, for some buffer sizes, a\n buffer overflow happens on a call to olm_session_describe. Furthermore, safe buffer sizes were\n undocumented. The overflow content is partially controllable by the attacker and limited to ASCII spaces\n and digits. 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CVE-2021-43539
