CVE-2012-3517

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Summary

CVECVE-2012-3517
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2012-08-26 03:17:44 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionUse-after-free vulnerability in dns.c in Tor before 0.2.2.38 might allow remote attackers to cause a denial of service (daemon crash) via vectors related to failed DNS requests.

Risk And Classification

Primary CVSS: v2.0 5 from [email protected]

AV:N/AC:L/Au:N/C:N/I:N/A:P

Problem Types: CWE-399 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

AV:N/AC:L/Au:N/C:N/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Tor Tor All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
oss-security - Re: CVE Request -- Tor 0.2.2.38: Three issues af854a3a-2127-422b-91ae-364da2661108 openwall.com
Bug 849949 – CVE-2012-3517 tor: Read from freed memory and double free by processing failed DNS request af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com
#6480 (double connection_free() in dns_resolve()) – Tor Bug Tracker & Wiki af854a3a-2127-422b-91ae-364da2661108 trac.torproject.org Patch
Gentoo Linux Documentation -- Tor: Multiple vulnerabilities af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org
openSUSE-SU-2012:1068-1: moderate: tor: fixed some security bugs af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
[tor-announce] Tor 0.2.2.38 is released af854a3a-2127-422b-91ae-364da2661108 lists.torproject.org
tor - Tor's source code af854a3a-2127-422b-91ae-364da2661108 gitweb.torproject.org
[SECURITY] Fedora 18 Update: tor-0.2.2.39-1800.fc18 af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
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