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CVE-2005-2643

5.0 · MEDIUM

Tor 0.1.0.13 and earlier, and experimental versions 0.1.1.4-alpha and earlier, does not reject certain weak keys when using ephemeral Diffie-Hellman (DH) handshakes, which allows malicious Tor serv…

Published Aug 23, 2005torEPSS 1.25%

Overview

CVE-2005-2643 is a medium-severity vulnerability affecting tor tor. It was published on August 23, 2005 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 0.1.0.13 and earlier, and experimental versions 0.1.1.4-alpha and earlier, does not reject certain weak keys when using ephemeral Diffie-Hellman (DH) handshakes, which allows malicious Tor servers to obtain the keys that a client uses for other systems in the circuit.

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

References

Refarchives.seul.org/or/announce/Aug-2005/msg00002.htmlRefmarc.info/?l=bugtraq&m=112448002732443&w=2Refsecunia.com/advisories/16424Refsecuritytracker.com/id?1014739Refarchives.seul.org/or/announce/Aug-2005/msg00002.htmlRefmarc.info/?l=bugtraq&m=112448002732443&w=2Refsecunia.com/advisories/16424Refsecuritytracker.com/id?1014739

How CyberStrike helps

Frequently asked questions

What is CVE-2005-2643?

CVE-2005-2643 is a medium-severity vulnerability affecting tor tor. It was published on August 23, 2005 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2005-2643?

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-2005-2643?

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-2005-2643?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2005-2643 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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