Buffer overflow in Tor - CVE-2011-1924
Published: June 14, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU44975
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2011-1924
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: tor.eff.org
Affected software:
Tor
Tor
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
Buffer overflow in the policy_summarize function in or/policies.c in Tor before 0.2.1.30 allows remote attackers to cause a denial of service (directory authority crash) via a crafted policy that triggers creation of a long port list.
How to mitigate CVE-2011-1924
Install update from vendor's website.
Sources
- http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061258.html
- http://secunia.com/advisories/43548
- http://secunia.com/advisories/44862
- http://www.securityfocus.com/bid/46618
- https://bugzilla.redhat.com/show_bug.cgi?id=705192
- https://bugzilla.redhat.com/show_bug.cgi?id=705194
- https://gitweb.torproject.org/tor.git/commit/43414eb98821d3b5c6c65181d7545ce938f82c8e
- https://lists.torproject.org/pipermail/tor-announce/2011-February/000000.html