High severity · published Apr 17, 2017
CVE-2016-7551
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…
7.5
CVSS
5.3%
EPSS
No
On KEV
Description
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).
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.3% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Asterisk · Digium
11.0.0; 11.0.0; 11.0.0; 11.0.0; 11.0.0; 11.0.1; +34 more · source: NVD
CA
Certified Asterisk · Digium
11.6; 11.6; 11.6; 11.6; 11.6; 11.6; +25 more · source: NVD
DL
Debian Linux · Debian
8.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-7551
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-7551
Mitigation
http://downloads.asterisk.org/pub/security/AST-2016-007.html
Third Party Advisory
http://www.debian.org/security/2016/dsa-3700
Issue Tracking
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=838832
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1374733
Issue Tracking
https://issues.asterisk.org/jira/browse/ASTERISK-26272
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