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CVE-2009-0939

10.0 · HIGH

Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which has unknown impact and attack vectors related to "Spec conformance," as demonstrated using 192.168.0.

Published Mar 18, 2009torEPSS 2.05%

Overview

CVE-2009-0939 is a high-severity vulnerability affecting tor tor. It was published on March 18, 2009 and has a CVSS 2.0 base score of 10.0 (HIGH).

This vulnerability has a CVSS 2.0 base score of 10.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which has unknown impact and attack vectors related to "Spec conformance," as demonstrated using 192.168.0.

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/Feb-2009/msg00000.htmlRefsecunia.com/advisories/33880Refsecunia.com/advisories/34583Refsecurity.gentoo.org/glsa/glsa-200904-11.xmlRefwww.securityfocus.com/bid/33713Refarchives.seul.org/or/announce/Feb-2009/msg00000.htmlRefsecunia.com/advisories/33880Refsecunia.com/advisories/34583Refsecurity.gentoo.org/glsa/glsa-200904-11.xmlRefwww.securityfocus.com/bid/33713

How CyberStrike helps

Frequently asked questions

What is CVE-2009-0939?

CVE-2009-0939 is a high-severity vulnerability affecting tor tor. It was published on March 18, 2009 and has a CVSS 2.0 base score of 10.0 (HIGH).

How severe is CVE-2009-0939?

This vulnerability has a CVSS 2.0 base score of 10.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-0939?

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-2009-0939?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-0939 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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