Vulnerability Details : CVE-2012-3518
The networkstatus_parse_vote_from_string function in routerparse.c in Tor before 0.2.2.38 does not properly handle an invalid flavor name, which allows remote attackers to cause a denial of service (out-of-bounds read and daemon crash) via a crafted (1) vote document or (2) consensus document.
Vulnerability category: OverflowDenial of service
Products affected by CVE-2012-3518
- cpe:2.3:a:tor:tor:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2012-3518
3.76%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 91 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2012-3518
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST |
CWE ids for CVE-2012-3518
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The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2012-3518
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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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https://trac.torproject.org/projects/tor/ticket/6530
#6530 (Out-of-bounds read in networkstatus_parse_vote_from_string()) – Tor Bug Tracker & Wiki
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https://gitweb.torproject.org/tor.git/commit/55f635745afacefffdaafc72cc176ca7ab817546
tor - Tor's source code
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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://gitweb.torproject.org/tor.git/commit/57e35ad3d91724882c345ac709666a551a977f0f
tor - Tor's source code
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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
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