Vulnerability Details : 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.
Vulnerability category: Denial of service
Products affected by CVE-2011-0490
- cpe:2.3:a:tor:tor:*:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.9.1:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.9.2:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.9.9:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.9.5:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.9.6:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.9.3:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.9.4:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.9:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.9.7:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.9.8:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.4:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.5:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.10:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.11:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.6:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.7:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.12:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.13:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.8:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.9:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.3:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.2_pre13:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.2_pre14:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.2_pre22:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.2_pre23:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.5:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.6:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.8:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.8.1:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.14:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.15:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.2_pre15:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.2_pre16:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.2_pre24:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.2_pre25:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.6.1:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.6.2:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.9.10:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.2_pre20:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.2_pre21:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.3:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.4:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.7.2:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.7.3:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.16:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.0.17:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.2_pre17:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.2_pre18:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.2_pre19:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.2_pre26:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.2_pre27:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.7:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.0.7.1:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.14:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.15:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.22:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.3:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.12:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.13:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.20:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.21:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.8:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.9:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.16:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.17:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.18:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.4:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.5:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.10:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.11:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.19:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.6:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.7:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.26:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.23:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.14:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.8:beta:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.7:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.10:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.9:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.2:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.13:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.6:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.5:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.12:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.11:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.4:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.5:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.3:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.19:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.30:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.15:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.17:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.18:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.16:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.8:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.9:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.16:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.17:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.24:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.25:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1:*:*:*:*:*:*:*
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- cpe:2.3:a:tor:tor:0.2.0.4:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.5:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.12:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.13:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.20:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.21:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.30:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.28:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.6:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.7:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.14:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.15:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.22:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.23:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.31:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.2.31:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.1:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.2:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.10:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.11:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.18:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.19:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.26:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.27:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.29:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.32:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.35:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.34:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.0.33:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.6:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.3:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.7:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.5:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.4:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.1:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.2:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.1:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.3:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.5:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.6:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.2:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.4:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.11:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.12:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.19:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.13:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.14:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.9:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.10:alpha:*:*:*:*:*:*
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- cpe:2.3:a:tor:tor:0.2.2.8:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.2.15:alpha:*:*:*:*:*:*
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- cpe:2.3:a:tor:tor:0.2.1.11:alpha:*:*:*:*:*:*
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- cpe:2.3:a:tor:tor:0.2.1.20:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.1.25:*:*:*:*:*:*:*
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- cpe:2.3:a:tor:tor:0.2.1.8:alpha:*:*:*:*:*:*
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- cpe:2.3:a:tor:tor:0.1.1.5:alpha:*:*:*:*:*:*
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- cpe:2.3:a:tor:tor:0.2.1.24:*:*:*:*:*:*:*
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- cpe:2.3:a:tor:tor:0.2.1.2:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.1.26:*:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.1.7:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.2.1.9:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.3:alpha:*:*:*:*:*:*
- cpe:2.3:a:tor:tor:0.1.1.4:alpha:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2011-0490
2.84%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 90 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2011-0490
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 |
References for CVE-2011-0490
-
https://trac.torproject.org/projects/tor/ticket/2190
#2190 (Possible reentrant calls to libevent from libevent logging callback) – Tor Bug Tracker & Wiki
-
https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog
Patch
-
http://blog.torproject.org/blog/tor-02129-released-security-patches
Tor 0.2.1.29 is released (security patches) | Tor BlogPatch;Vendor Advisory
-
https://exchange.xforce.ibmcloud.com/vulnerabilities/64889
Tor Libevent denial of service CVE-2011-0490 Vulnerability Report
-
http://archives.seul.org/or/announce/Jan-2011/msg00000.html
Tor 0.2.1.29 is released (security patches)Patch
-
http://www.securityfocus.com/bid/45953
Tor Multiple Denial of Service Vulnerabilities
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