Tor does not verify a node's uptime and bandwidth advertisements, which allows remote…
Priority LOW 24Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · None · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.01788 78th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2007-1103
- 2026-10-03 Alias added: GHSA-4r3h-7hr5-pjx6
References
Other 5
- [or-talk] 20070225 "Low-Resource Routing Attacks Against Anonymous Systems"
- [or-talk] 20070225 Re: ISP controlling entry/exti ("Low-Resource Routing Attacks Against Anonymous Systems")
- http://www.cs.colorado.edu/department/publications/reports/docs/CU-CS-1025-07.pdf
- [or-talk] 20070225 Re: "Low-Resource Routing Attacks Against Anonymous Systems"
- 45249
More Tor vulnerabilities
- TI-2010-01618 Heap-based buffer overflow in Tor before 0.2.1.28 and 0.2.2.x before 0.2.2.20-alpha… CVSS 2.0HIGH 10.0
- TI-2009-00394 Unspecified vulnerability in Tor before 0.2.0.33 has unspecified impact and remote attack… CVSS 2.0HIGH 10.0
- TI-2009-00893 Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which has unknown impact… CVSS 2.0HIGH 10.0
- TI-2008-05138 Tor before 0.2.0.32 does not properly process the ClientDNSRejectInternalAddresses… CVSS 2.0HIGH 9.3
- TI-2011-02436 Multiple heap-based buffer overflows in Tor before 0.2.2.35 allow remote attackers to… CVSS 2.0HIGH 7.6
- TI-2006-03307 Integer overflow in Tor before 0.1.1.20 allows remote attackers to execute arbitrary code… CVSS 2.0HIGH 7.5
Sources
- CVE-2007-1103 · CVE Program
- CVE-2007-1103 · NVD
- FIRST EPSS
- GHSA-4r3h-7hr5-pjx6 · GitHub Advisory Database · CC BY 4.0
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