CVE-2006-6893
mediumpriority · track · 21EPSS 0.025 · 85 %ileEUUSEPSS · scored 2026-10-28
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
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affected products (2)
Products and version ranges known to be affected.
also known as (2)
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sources
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references (6)
External citations — patches, advisories, analysis.
- http://events.ccc.de/congress/2006/Fahrplan/events/1513.en.htmlenisa_euvd
- http://www.cl.cam.ac.uk/~sjm217/papers/ccs06hotornot.pdfenisa_euvd
- http://www.lightbluetouchpaper.org/2006/09/04/hot-or-not-revealing-hidden-services-by-their-clock-skew/enisa_euvd
- http://events.ccc.de/congress/2006/Fahrplan/events/1513.en.htmlnvd
- http://www.cl.cam.ac.uk/~sjm217/papers/ccs06hotornot.pdfExploitnvd
- http://www.lightbluetouchpaper.org/2006/09/04/hot-or-not-revealing-hidden-services-by-their-clock-skew/nvd
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