var-201101-0396
Vulnerability from variot
Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (assertion failure and daemon exit) via blobs that trigger a certain file size, as demonstrated by the cached-descriptors.new file. Tor is a second generation of onion routing implementation. Tor is prone to multiple denial-of-service vulnerabilities. Attackers can exploit these issues to crash the affected computer, denying service to legitimate users. These issues affect versions prior to Tor 0.2.1.29, 0.2.2, and 0.2.2.21-alpha. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201110-13
http://security.gentoo.org/
Severity: High Title: Tor: Multiple vulnerabilities Date: October 18, 2011 Bugs: #351920, #359789 ID: 201110-13
Synopsis
Multiple vulnerabilities were found in Tor, the most severe of which may allow a remote attacker to execute arbitrary code.
Affected packages
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Package / Vulnerable / Unaffected
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1 net-misc/tor < 0.2.1.30 >= 0.2.1.30
Description
Multiple vulnerabilities have been discovered in Tor. Please review the CVE identifiers referenced below for details.
Impact
A remote unauthenticated attacker may be able to execute arbitrary code with the privileges of the Tor process or create a Denial of Service.
Workaround
There is no known workaround at this time.
Resolution
All Tor users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/tor-0.2.1.30"
NOTE: This is a legacy GLSA. Updates for all affected architectures are available since April 2, 2011. It is likely that your system is already no longer affected by this issue.
References
[ 1 ] CVE-2011-0015 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0015 [ 2 ] CVE-2011-0016 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0016 [ 3 ] CVE-2011-0427 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0427 [ 4 ] CVE-2011-0490 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0490 [ 5 ] CVE-2011-0491 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0491 [ 6 ] CVE-2011-0492 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0492 [ 7 ] CVE-2011-0493 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0493 [ 8 ] CVE-2011-1924 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1924
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201110-13.xml
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2011 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
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"MEDIUM" } ] } ], "sources": [ { "db": "JVNDB", "id": "JVNDB-2011-004136" }, { "db": "CNNVD", "id": "CNNVD-201101-223" }, { "db": "NVD", "id": "CVE-2011-0492" } ] }, "description": { "@context": { "@vocab": "https://www.variotdbs.pl/ref/description#", "sources": { "@container": "@list", "@context": { "@vocab": "https://www.variotdbs.pl/ref/sources#" } } }, "data": "Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (assertion failure and daemon exit) via blobs that trigger a certain file size, as demonstrated by the cached-descriptors.new file. Tor is a second generation of onion routing implementation. Tor is prone to multiple denial-of-service vulnerabilities. \nAttackers can exploit these issues to crash the affected computer, denying service to legitimate users. \nThese issues affect versions prior to Tor 0.2.1.29, 0.2.2, and 0.2.2.21-alpha. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\nGentoo Linux Security Advisory GLSA 201110-13\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n http://security.gentoo.org/\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\n Severity: High\n Title: Tor: Multiple vulnerabilities\n Date: October 18, 2011\n Bugs: #351920, #359789\n ID: 201110-13\n\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\nSynopsis\n========\n\nMultiple vulnerabilities were found in Tor, the most severe of which\nmay allow a remote attacker to execute arbitrary code. \n\nAffected packages\n=================\n\n -------------------------------------------------------------------\n Package / Vulnerable / Unaffected\n -------------------------------------------------------------------\n 1 net-misc/tor \u003c 0.2.1.30 \u003e= 0.2.1.30\n\nDescription\n===========\n\nMultiple vulnerabilities have been discovered in Tor. Please review the\nCVE identifiers referenced below for details. \n\nImpact\n======\n\nA remote unauthenticated attacker may be able to execute arbitrary code\nwith the privileges of the Tor process or create a Denial of Service. \n\nWorkaround\n==========\n\nThere is no known workaround at this time. \n\nResolution\n==========\n\nAll Tor users should upgrade to the latest version:\n\n # emerge --sync\n # emerge --ask --oneshot --verbose \"\u003e=net-misc/tor-0.2.1.30\"\n\nNOTE: This is a legacy GLSA. Updates for all affected architectures are\navailable since April 2, 2011. It is likely that your system is already\nno longer affected by this issue. \n\nReferences\n==========\n\n[ 1 ] CVE-2011-0015\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0015\n[ 2 ] CVE-2011-0016\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0016\n[ 3 ] CVE-2011-0427\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0427\n[ 4 ] CVE-2011-0490\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0490\n[ 5 ] CVE-2011-0491\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0491\n[ 6 ] CVE-2011-0492\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0492\n[ 7 ] CVE-2011-0493\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-0493\n[ 8 ] CVE-2011-1924\n http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1924\n\nAvailability\n============\n\nThis GLSA and any updates to it are available for viewing at\nthe Gentoo Security Website:\n\n http://security.gentoo.org/glsa/glsa-201110-13.xml\n\nConcerns?\n=========\n\nSecurity is a primary focus of Gentoo Linux and ensuring the\nconfidentiality and security of our users\u0027 machines is of utmost\nimportance to us. 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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.