CVE-2012-3863

Description

channels/chan_sip.c in Asterisk Open Source 1.8.x before 1.8.13.1 and 10.x before 10.5.2, Asterisk Business Edition C.3.x before C.3.7.5, Certified Asterisk 1.8.11-certx before 1.8.11-cert4, and Asterisk Digiumphones 10.x.x-digiumphones before 10.5.2-digiumphones does not properly handle a provisional response to a SIP reINVITE request, which allows remote authenticated users to cause a denial of service (RTP port exhaustion) via sessions that lack final responses.

Category

4.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 7.19% Top 10%
Vendor Advisory debian.org Vendor Advisory asterisk.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/50687 third party advisory
http://secunia.com/advisories/50756 third party advisory
http://www.debian.org/security/2012/dsa-2550 vendor advisory
http://www.securityfocus.com/bid/54327 vdb entry
http://downloads.asterisk.org/pub/security/AST-2012-010.html patch vendor advisory
https://issues.asterisk.org/jira/browse/ASTERISK-19992

Frequently Asked Questions

What is the severity of CVE-2012-3863?
CVE-2012-3863 has been scored as a medium severity vulnerability.
How to fix CVE-2012-3863?
To fix CVE-2012-3863, 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-2012-3863 being actively exploited in the wild?
It is possible that CVE-2012-3863 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~7% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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