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CVE-2011-0490

5.0 · MEDIUM

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 vector…

Published Jan 19, 2011torEPSS 2.52%

Overview

CVE-2011-0490 is a medium-severity vulnerability affecting tor tor. It was published on January 19, 2011 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from tor. Update tor to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
tortor0Affected

References

Refarchives.seul.org/or/announce/Jan-2011/msg00000.htmlRefblog.torproject.org/blog/tor-02129-released-security-patchesRefwww.securityfocus.com/bid/45953Refexchange.xforce.ibmcloud.com/vulnerabilities/64889Refgitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLogReftrac.torproject.org/projects/tor/ticket/2190Refarchives.seul.org/or/announce/Jan-2011/msg00000.htmlRefblog.torproject.org/blog/tor-02129-released-security-patchesRefwww.securityfocus.com/bid/45953Refexchange.xforce.ibmcloud.com/vulnerabilities/64889

How CyberStrike helps

Frequently asked questions

What is CVE-2011-0490?

CVE-2011-0490 is a medium-severity vulnerability affecting tor tor. It was published on January 19, 2011 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2011-0490?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-0490?

Check the references section for vendor advisories and patches from tor. Update tor to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-0490?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-0490 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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