The vulnerability of Thunderbird email client, Firefox and Firefox ESR browsers relates to improper error handling when processing an inaccessible PAC file. This allows a malicious actor to specify a URL for the PAC file. If the server on which the PAC file is located becomes unavailable, OCSP requests are blocked, resulting in incorrect error pages being displayed.

The vulnerability of the Thunderbird email client, as well as browsers Firefox and Firefox ESR, is related to improper error handling when processing an inaccessible PAC file. Exploiting this vulnerability allows a remote attacker to specify a PAC URL. If the server where the PAC file is located ...

Mozilla: Unavailable PAC file resulted in OCSP requests being blocked

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes the issue that if a PAC URL was set and the server that hosts the PAC was not reachable, OCSP requests are blocked, resulting in incorrect error pages being shown...

Mozilla: Unavailable PAC file resulted in OCSP requests being blocked

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes the issue that if a PAC URL was set and the server that hosts the PAC was not reachable, OCSP requests are blocked, resulting in incorrect error pages being shown...

Mozilla: Unavailable PAC file resulted in OCSP requests being blocked

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes the issue that if a PAC URL was set and the server that hosts the PAC was not reachable, OCSP requests are blocked, resulting in incorrect error pages being shown...

Mozilla: Unavailable PAC file resulted in OCSP requests being blocked

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes the issue that if a PAC URL was set and the server that hosts the PAC was not reachable, OCSP requests are blocked, resulting in incorrect error pages being shown...

Mozilla: Unavailable PAC file resulted in OCSP requests being blocked

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes the issue that if a PAC URL was set and the server that hosts the PAC was not reachable, OCSP requests are blocked, resulting in incorrect error pages being shown...

Mozilla: Unavailable PAC file resulted in OCSP requests being blocked

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes the issue that if a PAC URL was set and the server that hosts the PAC was not reachable, OCSP requests are blocked, resulting in incorrect error pages being shown...

Mozilla: Unavailable PAC file resulted in OCSP requests being blocked

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes the issue that if a PAC URL was set and the server that hosts the PAC was not reachable, OCSP requests are blocked, resulting in incorrect error pages being shown...

Mozilla Firefox 代码问题漏洞

Mozilla Firefox is an open source web browser from the Mozilla Foundation. Mozilla Firefox suffers from a code issue vulnerability that originates when an application configures a PAC URL and is unable to access the server hosting the PAC, OCSP requests are blocked, and the application displays a...

CVE-2021-43269

In Code42 app before 8.8.0, eval injection allows an attacker to change a device’s proxy configuration to use a malicious proxy auto-config PAC file, leading to arbitrary code execution. This affects Incydr Basic, Advanced, and Gov F1; CrashPlan Cloud; and CrashPlan for Small Business. Incydr...

CVE-2021-43269

In Code42 app before 8.8.0, eval injection allows an attacker to change a device’s proxy configuration to use a malicious proxy auto-config PAC file, leading to arbitrary code execution. This affects Incydr Basic, Advanced, and Gov F1; CrashPlan Cloud; and CrashPlan for Small Business. Incydr...

url.cpp in libproxy through 0.4.15 is prone to a buffer overflow when PAC is enabled as demonstrated by a large PAC file that is delivered without a Content-length header.

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CVE-2021-30966

A logic issue was addressed with improved state management. This issue is fixed in macOS Monterey 12.1, watchOS 8.3, iOS 15.2 and iPadOS 15.2, tvOS 15.2. User traffic might unexpectedly be leaked to a proxy server despite PAC configurations...

AZL-7271 CVE-2020-26154 affecting package libproxy for versions less than 0.4.17-5

url.cpp in libproxy through 0.4.15 is prone to a buffer overflow when PAC is enabled, as demonstrated by a large PAC file that is delivered without a Content-length header...

PT-2020-6589 · Libproxy +5 · Libproxy +5

Name of the Vulnerable Software and Affected Versions: libproxy versions prior to 0.4.16 Description: The issue is related to a buffer overflow in the url.cpp file of libproxy when PAC is enabled. This can be triggered by a large PAC file delivered without a Content-length header, potentially...

CVE-2019-2047

In UpdateLoadElement of ic.cc, there is a possible out-of-bounds write due to type confusion. This could lead to remote code execution in the proxy auto-config with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android Versions: Android-7.0...

CVE-2019-2047

In UpdateLoadElement of ic.cc, there is a possible out-of-bounds write due to type confusion. This could lead to remote code execution in the proxy auto-config with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android Versions: Android-7.0...

Type confusion

In UpdateLoadElement of ic.cc, there is a possible out-of-bounds write due to type confusion. This could lead to remote code execution in the proxy auto-config with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android Versions: Android-7.0...

Integer overflow

In CalculateInstanceSizeForDerivedClass of objects.cc, there is possible memory corruption due to an integer overflow. This could lead to remote code execution in the proxy auto-config with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Androi...

Out-of-bounds

In heap of spaces.h, there is a possible out of bounds read due to improper input validation. This could lead to remote information disclosure when processing a proxy auto config file with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android...