Vulnerability CVE-2018-7286
Published: 2018-02-21   Modified: 2018-02-22

Description:
An issue was discovered in Asterisk through 13.19.1, 14.x through 14.7.5, and 15.x through 15.2.1, and Certified Asterisk through 13.18-cert2. res_pjsip allows remote authenticated users to crash Asterisk (segmentation fault) by sending a number of SIP INVITE messages on a TCP or TLS connection and then suddenly closing the connection.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Asterisk chan_pjsip 15.2.0 INVITE Denial of Service
EnableSecurity
28.02.2018

Type:

CWE-noinfo

CVSS2 => (AV:N/AC:L/Au:S/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4/10
2.9/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Digium -> Asterisk 
Digium -> Certified asterisk 
Debian -> Debian linux 

 References:
http://downloads.asterisk.org/pub/security/AST-2018-005.html
http://www.securityfocus.com/bid/103129
http://www.securitytracker.com/id/1040417
https://issues.asterisk.org/jira/browse/ASTERISK-27618
https://www.debian.org/security/2018/dsa-4320
https://www.exploit-db.com/exploits/44181/
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