6.7 Medium
AI Score
Confidence
Low
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
0.948 High
EPSS
Percentile
99.2%
Asterisk Open Source 1.8 before 1.8.32.3, 11.x before 11.17.1, 12.x before 12.8.2, and 13.x before 13.3.2 and Certified Asterisk 1.8.28 before 1.8.28-cert5, 11.6 before 11.6-cert11, and 13.1 before 13.1-cert2, when registering a SIP TLS device, does not properly handle a null byte in a domain name in the subject’s Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.
advisories.mageia.org/MGASA-2015-0153.html
downloads.asterisk.org/pub/security/AST-2015-003.html
packetstormsecurity.com/files/131364/Asterisk-Project-Security-Advisory-AST-2015-003.html
seclists.org/fulldisclosure/2015/Apr/22
www.debian.org/security/2016/dsa-3700
www.mandriva.com/security/advisories?name=MDVSA-2015:206
www.securityfocus.com/archive/1/535222/100/0/threaded
www.securityfocus.com/bid/74022
www.securitytracker.com/id/1032052
lists.fedoraproject.org/pipermail/package-announce/2015-July/162260.html