What’s Vulnerable › Vulnerabilities

CVE-2007-1103

• Severity: medium (CVSS 4.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2007-02-26 · updated 2026-06-16

Description

Tor does not verify a node's uptime and bandwidth advertisements, which allows remote attackers who operate a low resource node to make false claims of greater resources, which places the node into use for many circuits and compromises the anonymity of traffic sources and destinations.

Affected products

• Tor: through 0.1.1.26

References

• http://archives.seul.org/or/talk/Feb-2007/msg00197.html
• http://archives.seul.org/or/talk/Feb-2007/msg00200.html
• http://archives.seul.org/or/talk/Feb-2007/msg00202.html
• http://osvdb.org/45249
• http://www.cs.colorado.edu/department/publications/reports/docs/CU-CS-1025-07.pdf
• http://archives.seul.org/or/talk/Feb-2007/msg00197.html
• http://archives.seul.org/or/talk/Feb-2007/msg00200.html
• http://archives.seul.org/or/talk/Feb-2007/msg00202.html
• http://osvdb.org/45249
• http://www.cs.colorado.edu/department/publications/reports/docs/CU-CS-1025-07.pdf

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