Vulnerability CVE-2021-26906
Published: 2021-02-18

Description:
An issue was discovered in res_pjsip_session.c in Digium Asterisk through 13.38.1; 14.x, 15.x, and 16.x through 16.16.0; 17.x through 17.9.1; and 18.x through 18.2.0, and Certified Asterisk through 16.8-cert5. An SDP negotiation vulnerability in PJSIP allows a remote server to potentially crash Asterisk by sending specific SIP responses that cause an SDP negotiation failure.

Type:

CWE-404

 (Improper Resource Shutdown or Release)

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Digium -> Asterisk 
Digium -> Certified asterisk 

 References:
http://packetstormsecurity.com/files/161477/Asterisk-Project-Security-Advisory-AST-2021-005.html
http://seclists.org/fulldisclosure/2021/Feb/61
https://downloads.asterisk.org/pub/security/
https://downloads.asterisk.org/pub/security/AST-2021-005.html
https://issues.asterisk.org/jira/browse/ASTERISK-29196
Copyright 2024, cxsecurity.com

 

Back to Top