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"accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-8819"], "modified": "2019-10-03T00:03:00", "cpe": ["cpe:/o:debian:debian_linux:8.0", "cpe:/o:debian:debian_linux:9.0"], "id": "CVE-2017-8819", "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-8819", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}, "cpe23": ["cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*"]}, {"lastseen": "2020-12-09T20:13:38", "description": "In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, relays (that have incompletely downloaded descriptors) can pick themselves in a circuit path, leading to a degradation of anonymity, aka TROVE-2017-012.", "edition": 5, "cvss3": {"exploitabilityScore": 2.2, "cvssV3": {"baseSeverity": "LOW", "confidentialityImpact": "LOW", "attackComplexity": "HIGH", "scope": "UNCHANGED", "attackVector": "NETWORK", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 3.7, "privilegesRequired": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N", "userInteraction": "NONE", "version": "3.0"}, "impactScore": 1.4}, "published": "2017-12-03T07:29:00", "title": "CVE-2017-8822", "type": "cve", "cwe": ["CWE-417"], "bulletinFamily": "NVD", "cvss2": {"severity": "MEDIUM", "exploitabilityScore": 8.6, "obtainAllPrivilege": false, "userInteractionRequired": false, "obtainOtherPrivilege": false, "cvssV2": {"accessComplexity": "MEDIUM", "confidentialityImpact": "PARTIAL", "availabilityImpact": "NONE", "integrityImpact": "NONE", "baseScore": 4.3, "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0", "accessVector": "NETWORK", "authentication": "NONE"}, "impactScore": 2.9, "obtainUserPrivilege": false}, "cvelist": ["CVE-2017-8822"], "modified": "2017-12-21T18:30:00", "cpe": ["cpe:/o:debian:debian_linux:8.0", "cpe:/o:debian:debian_linux:9.0"], "id": "CVE-2017-8822", "href": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-8822", "cvss": {"score": 4.3, "vector": "AV:N/AC:M/Au:N/C:P/I:N/A:N"}, "cpe23": ["cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*"]}], "archlinux": [{"lastseen": "2020-09-22T18:36:42", "bulletinFamily": "unix", "cvelist": ["CVE-2017-8819", "CVE-2017-8820", "CVE-2017-8822", "CVE-2017-8823"], "description": "Arch Linux Security Advisory ASA-201712-10\n==========================================\n\nSeverity: High\nDate : 2017-12-16\nCVE-ID : CVE-2017-8819 CVE-2017-8820 CVE-2017-8822 CVE-2017-8823\nPackage : tor\nType : multiple issues\nRemote : Yes\nLink : https://security.archlinux.org/AVG-539\n\nSummary\n=======\n\nThe package tor before version 0.3.1.9-1 is vulnerable to multiple\nissues including arbitrary code execution, information disclosure and\ndenial of service.\n\nResolution\n==========\n\nUpgrade to 0.3.1.9-1.\n\n# pacman -Syu \"tor>=0.3.1.9-1\"\n\nThe problems have been fixed upstream in version 0.3.1.9.\n\nWorkaround\n==========\n\nNone.\n\nDescription\n===========\n\n- CVE-2017-8819 (information disclosure)\n\nAn issue has been found in the way Tor before 0.3.1.9 checked for\nreplays, leading to a possible traffic confirmation attack.\n\n- CVE-2017-8820 (denial of service)\n\nA denial of service issue where an attacker could crash a directory\nauthority using a malformed router descriptor has been found in Tor\nbefore 0.3.1.9.\n\n- CVE-2017-8822 (information disclosure)\n\nIn Tor before 0.3.1.9, relays (that have incompletely downloaded\ndescriptors) can pick themselves in a circuit path, leading to a\ndegradation of anonymity, aka TROVE-2017-012.\n\n- CVE-2017-8823 (arbitrary code execution)\n\nA use-after-free vulnerability has been found in Tor before 0.3.1.9,\nleading to a crash of v2 Tor onion services when they failed to open\ncircuits while expiring introduction points.\n\nImpact\n======\n\nA remote attacker might be able to reduce the anonymity of Tor users,\ncause a denial of service or execute arbitrary code on the affected\nhost.\n\nReferences\n==========\n\nhttps://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516\nhttps://trac.torproject.org/projects/tor/ticket/24244\nhttps://trac.torproject.org/projects/tor/ticket/24245\nhttps://bugs.torproject.org/21534\nhttps://bugs.torproject.org/24333\nhttps://trac.torproject.org/projects/tor/ticket/24313\nhttps://security.archlinux.org/CVE-2017-8819\nhttps://security.archlinux.org/CVE-2017-8820\nhttps://security.archlinux.org/CVE-2017-8822\nhttps://security.archlinux.org/CVE-2017-8823", "modified": "2017-12-16T00:00:00", "published": "2017-12-16T00:00:00", "id": "ASA-201712-10", "href": "https://security.archlinux.org/ASA-201712-10", "type": "archlinux", "title": "[ASA-201712-10] tor: multiple issues", "cvss": {"score": 6.8, "vector": "AV:N/AC:M/Au:N/C:P/I:P/A:P"}}], "freebsd": [{"lastseen": "2019-05-29T18:32:04", "bulletinFamily": "unix", "cvelist": ["CVE-2017-8819"], "description": "\nThe Torproject.org reports:\n\n\nTROVE-2017-009: Replay-cache ineffective for v2 onion services\nTROVE-2017-010: Remote DoS attack against directory authorities\nTROVE-2017-011: An attacker can make Tor ask for a password\nTROVE-2017-012: Relays can pick themselves in a circuit path\nTROVE-2017-013: Use-after-free in onion service v2\n\n\n", "edition": 5, "modified": "2017-12-01T00:00:00", "published": "2017-12-01T00:00:00", "id": "36EF8753-D86F-11E7-AD28-0025908740C2", "href": "https://vuxml.freebsd.org/freebsd/36ef8753-d86f-11e7-ad28-0025908740c2.html", "title": "tor -- Use-after-free in onion service v2", "type": "freebsd", "cvss": {"score": 5.0, "vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P"}}]}