CVE-2011-0493

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-01-19 · updated 2026-06-16
Weakness: CWE-189

Description

Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha might allow remote attackers to cause a denial of service (assertion failure and daemon exit) via vectors related to malformed router caches and improper handling of integer values.

Affected products

Tor: through 0.2.1.28; 0.0.2, 0.0.2_pre13, 0.0.2_pre14, 0.0.2_pre15, 0.0.2_pre16, 0.0.2_pre17 (+200)

References

http://archives.seul.org/or/announce/Jan-2011/msg00000.html
http://blog.torproject.org/blog/tor-02129-released-security-patches
http://www.securityfocus.com/bid/45953
https://exchange.xforce.ibmcloud.com/vulnerabilities/64864
https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog
https://trac.torproject.org/projects/tor/ticket/2352
http://archives.seul.org/or/announce/Jan-2011/msg00000.html
http://blog.torproject.org/blog/tor-02129-released-security-patches
http://www.securityfocus.com/bid/45953
https://exchange.xforce.ibmcloud.com/vulnerabilities/64864
https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog
https://trac.torproject.org/projects/tor/ticket/2352

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