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CVE-2006-6893

5.0 · MEDIUM

Tor allows remote attackers to discover the IP address of a hidden service by accessing this service at a high rate, thereby changing the server's CPU temperature and consequently changing the patt…

Published Dec 31, 2006torEPSS 2.51%

Overview

CVE-2006-6893 is a medium-severity vulnerability affecting tor tor. It was published on December 31, 2006 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 allows remote attackers to discover the IP address of a hidden service by accessing this service at a high rate, thereby changing the server's CPU temperature and consequently changing the pattern of time values visible through (1) ICMP timestamps, (2) TCP sequence numbers, and (3) TCP timestamps, a different vulnerability than CVE-2006-0414. NOTE: it could be argued that this is a laws-of-physics vulnerability that is a fundamental design limitation of certain hardware implementations, so perhaps this issue should not be included in CVE.

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

Refevents.ccc.de/congress/2006/Fahrplan/events/1513.en.htmlRefwww.cl.cam.ac.uk/~sjm217/papers/ccs06hotornot.pdfRefwww.lightbluetouchpaper.org/2006/09/04/hot-or-not-revealing-hidden-services-by-their-clock-skew/Refevents.ccc.de/congress/2006/Fahrplan/events/1513.en.htmlRefwww.cl.cam.ac.uk/~sjm217/papers/ccs06hotornot.pdfRefwww.lightbluetouchpaper.org/2006/09/04/hot-or-not-revealing-hidden-services-by-their-clock-skew/

How CyberStrike helps

Frequently asked questions

What is CVE-2006-6893?

CVE-2006-6893 is a medium-severity vulnerability affecting tor tor. It was published on December 31, 2006 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2006-6893?

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-2006-6893?

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-2006-6893?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2006-6893 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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