VulnerabilityModified
CVE-2021-26712
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.
HIGH 7.5EPSS 3.59%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.59%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 3.59% probability · 89th percentile
- CISA KEV
- Not listed
- Affected
- digium/asterisk · digium/certified asterisk
- Source
- cve@mitre.org
References
- http://packetstormsecurity.com/files/161473/Asterisk-Project-Security-Advisory-AST-2021-003.htmlThird Party Advisory
- http://seclists.org/fulldisclosure/2021/Feb/59Mailing List, Third Party Advisory
- https://downloads.asterisk.org/pub/security/Vendor Advisory
- https://downloads.asterisk.org/pub/security/AST-2021-003.htmlVendor Advisory
- https://issues.asterisk.org/jira/browse/ASTERISK-29260Issue Tracking, Patch, Vendor Advisory
- http://packetstormsecurity.com/files/161473/Asterisk-Project-Security-Advisory-AST-2021-003.htmlThird Party Advisory
- http://seclists.org/fulldisclosure/2021/Feb/59Mailing List, Third Party Advisory
- https://downloads.asterisk.org/pub/security/Vendor Advisory
- https://downloads.asterisk.org/pub/security/AST-2021-003.htmlVendor Advisory
- https://issues.asterisk.org/jira/browse/ASTERISK-29260Issue Tracking, Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.