Vulnerability Details : CVE-2012-3519
routerlist.c in Tor before 0.2.2.38 uses a different amount of time for relay-list iteration depending on which relay is chosen, which might allow remote attackers to obtain sensitive information about relay selection via a timing side-channel attack.
Vulnerability category: Information leak
Exploit prediction scoring system (EPSS) score for CVE-2012-3519
Probability of exploitation activity in the next 30 days: 0.64%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 76 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2012-3519
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST |
CWE ids for CVE-2012-3519
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The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: nvd@nist.gov (Primary)
References for CVE-2012-3519
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https://gitweb.torproject.org/tor.git/commit/308f6dad20675c42b29862f4269ad1fbfb00dc9a
tor - Tor's source code
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https://gitweb.torproject.org/tor.git/commit/d48cebc5e498b0ae673635f40fc57cdddab45d5b
tor - Tor's source code
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https://lists.torproject.org/pipermail/tor-announce/2012-August/000086.html
[tor-announce] Tor 0.2.2.38 is released
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http://security.gentoo.org/glsa/glsa-201301-03.xml
Tor: Multiple vulnerabilities (GLSA 201301-03) — Gentoo security
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https://trac.torproject.org/projects/tor/ticket/6537
#6537 (Possible timing side-channel in router selection) – Tor Bug Tracker & Wiki
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http://openwall.com/lists/oss-security/2012/08/21/6
oss-security - Re: CVE Request -- Tor 0.2.2.38: Three issues
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http://lists.opensuse.org/opensuse-updates/2012-08/msg00048.html
openSUSE-SU-2012:1068-1: moderate: tor: fixed some security bugs
Products affected by CVE-2012-3519
- cpe:2.3:a:tor:tor:*:*:*:*:*:*:*:*