Home/CVE/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.
CVE

CVE-2012-3863

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.

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.

MEDIUM · CVSS 4 EPSS 0.07186
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  • EPSS percentile: top 8% of all CVEs by exploitation likelihood
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Affected Products & Versions

2
digium asterisk business editionall versions
digium asteriskall versions
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Scoring & Timeline

4
MEDIUM · CVSS v2 (legacy) · cve@mitre.org
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This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:S/C:N/I:N/A:P
Published to NVD09 Jul 2012 · 10:20 AM
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References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://downloads.asterisk.org/pub/security/AST-2012-010.htmlPatchVendor Advisory
http://secunia.com/advisories/50687
http://secunia.com/advisories/50756
http://www.debian.org/security/2012/dsa-2550
http://www.securityfocus.com/bid/54327
https://issues.asterisk.org/jira/browse/ASTERISK-19992
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