CVE-2012-4419

Description

The compare_tor_addr_to_addr_policy function in or/policies.c in Tor before 0.2.2.39, and 0.2.3.x before 0.2.3.21-rc, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a zero-valued port field that is not properly handled during policy comparison.

5.0

CVSS

Severity: Medium

CVSS 2.0 •

EPSS 1.62% Top 20%

Vendor Advisory gentoo.org Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org

Affected: n/a n/a

References

Link	Tags
http://security.gentoo.org/glsa/glsa-201301-03.xml	vendor advisory
https://trac.torproject.org/projects/tor/ticket/6690
http://openwall.com/lists/oss-security/2012/09/13/2	mailing list
http://secunia.com/advisories/50583	third party advisory
https://lists.torproject.org/pipermail/tor-talk/2012-September/025434.html	mailing list
https://gitweb.torproject.org/tor.git/blob/release-0.2.2:/ReleaseNotes
http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088006.html	vendor advisory
https://gitweb.torproject.org/tor.git/commit/62d96284f7e0f81c40d5df7e53dd7b4dfe7e56a5
http://lists.opensuse.org/opensuse-updates/2012-10/msg00005.html	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2012-4419?: CVE-2012-4419 has been scored as a medium severity vulnerability.
How to fix CVE-2012-4419?: To fix CVE-2012-4419, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2012-4419 being actively exploited in the wild?: It is possible that CVE-2012-4419 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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