chain_sip in Asterisk Open Source 11.x before 11.23.1 and 13.x 13.11.1 and Certified Asterisk 11.6 before 11.6-cert15 and 13.8 before 13.8-cert3 allows remote attackers to cause a denial of service (port exhaustion).
https://issues.asterisk.org/jira/browse/ASTERISK-26272
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=838832
http://www.debian.org/security/2016/dsa-3700
https://bugzilla.redhat.com/show_bug.cgi?id=1374733
http://downloads.asterisk.org/pub/security/AST-2016-007.html
Source: Mitre, NVD
Published: 2017-04-17
Updated: 2025-04-20
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: High
EPSS: 0.0663