CVE-2011-0490
Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha makes calls to Libevent within Libevent log handlers, which might allow remote attackers to cause a denial of service (daemon crash) via vectors that trigger certain log messages.
Does this matter?
Lower severity and a low EPSS score (2.52%). Track it; it rarely justifies an emergency change on its own.
Description
Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha makes calls to Libevent within Libevent log handlers, which might allow remote attackers to cause a denial of service (daemon crash) via vectors that trigger certain log messages.
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
- EPSS
- 2.52% probability · 85th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- tor/tor
- Source
- cve@mitre.org
EPSS 2.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://archives.seul.org/or/announce/Jan-2011/msg00000.htmlPatch
- http://blog.torproject.org/blog/tor-02129-released-security-patchesPatch, Vendor Advisory
- http://www.securityfocus.com/bid/45953
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64889
- https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLogPatch
- https://trac.torproject.org/projects/tor/ticket/2190
- http://archives.seul.org/or/announce/Jan-2011/msg00000.htmlPatch
- http://blog.torproject.org/blog/tor-02129-released-security-patchesPatch, Vendor Advisory
- http://www.securityfocus.com/bid/45953
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64889
- https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLogPatch
- https://trac.torproject.org/projects/tor/ticket/2190
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.