Vulnerability CVE-2021-26712
Published: 2021-02-18

Description:
Incorrect access controls in res_srtp.c in Sangoma Asterisk 13.38.1, 16.16.0, 17.9.1, and 18.2.0 and Certified Asterisk 16.8-cert5 allow a remote unauthenticated attacker to prematurely terminate secure calls by replaying SRTP packets.

Type:

NVD-CWE-Other

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Digium -> Asterisk 
Digium -> Certified asterisk 

 References:
http://packetstormsecurity.com/files/161473/Asterisk-Project-Security-Advisory-AST-2021-003.html
http://seclists.org/fulldisclosure/2021/Feb/59
https://downloads.asterisk.org/pub/security/
https://downloads.asterisk.org/pub/security/AST-2021-003.html
https://issues.asterisk.org/jira/browse/ASTERISK-29260
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