CVE-2012-4922

Description

The tor_timegm function in common/util.c in Tor before 0.2.2.39, and 0.2.3.x before 0.2.3.22-rc, does not properly validate time values, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a malformed directory object, a different vulnerability than CVE-2012-4419.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 5.59% Top 15%
Vendor Advisory gentoo.org Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://security.gentoo.org/glsa/glsa-201301-03.xml vendor advisory
https://gitweb.torproject.org/tor.git/blob/release-0.2.2:/ReleaseNotes
https://trac.torproject.org/projects/tor/ticket/6811
http://openwall.com/lists/oss-security/2012/09/12/5 mailing list
http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088006.html vendor advisory
https://gitweb.torproject.org/tor.git/commit/973c18bf0e84d14d8006a9ae97fde7f7fb97e404
https://lists.torproject.org/pipermail/tor-talk/2012-September/025501.html mailing list
http://lists.opensuse.org/opensuse-updates/2012-10/msg00005.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2012-4922?
CVE-2012-4922 has been scored as a medium severity vulnerability.
How to fix CVE-2012-4922?
To fix CVE-2012-4922, 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-2012-4922 being actively exploited in the wild?
It is possible that CVE-2012-4922 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~6% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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