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Last updated: 12/19/2014 3:58:57 PM

CVE Publication rate: 20.87

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Vulnerability Workload Index: 8.64
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National Cyber Awareness System

Vulnerability Summary for CVE-2007-1103

Original release date: 02/26/2007
Last revised: 11/15/2008
Source: US-CERT/NIST

Overview

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.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 4.3 (MEDIUM) (AV:N/AC:M/Au:N/C:P/I:N/A:N) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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External Source: MISC
Name: http://www.cs.colorado.edu/department/publications/reports/docs/CU-CS-1025-07.pdf
External Source: MLIST
Name: [or-talk] 20070225 "Low-Resource Routing Attacks Against Anonymous Systems"
External Source: OSVDB
Name: 45249
External Source: MLIST
Name: [or-talk] 20070225 Re: "Low-Resource Routing Attacks Against Anonymous Systems"
External Source: MLIST
Name: [or-talk] 20070225 Re: ISP controlling entry/exti ("Low-Resource Routing Attacks Against Anonymous Systems")

Vulnerable software and versions

+ Configuration 1
+ OR
* cpe:/a:tor:tor:0.1.1.26 and previous versions

* Denotes Vulnerable Software
Changes related to vulnerability configurations

Technical Details

Vulnerability Type (View All)