Public Date:
849949: CVE-2012-3517 tor: Read from freed memory and double free by processing failed DNS request

The MITRE CVE dictionary describes this issue as:

Use-after-free vulnerability in dns.c in Tor before might allow remote attackers to cause a denial of service (daemon crash) via vectors related to failed DNS requests.

Find out more about CVE-2012-3517 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 4.3
Base Metrics AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).