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CVE-2021-26712

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Date: February 18, 2021

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.

Language: C

Severity Score

Related Resources (9)

http://seclists.org/fulldisclosure/2021/Feb/59
https://security.alpinelinux.org/vuln/CVE-2021-26712
https://downloads.asterisk.org/pub/security/
http://packetstormsecurity.com/files/161473/Asterisk-Project-Security-Advisory-AST-2021-003.html
https://downloads.asterisk.org/pub/security/AST-2021-003.html
https://issues.asterisk.org/jira/browse/ASTERISK-29260
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-26712
https://nvd.nist.gov/vuln/detail/CVE-2021-26712
https://www.mend.io/vulnerability-database/CVE-2021-26712

Severity Score

Top Fix

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Upgrade Version

Upgrade to version 13.38.2, 16.16.1, 17.9.2, 18.2.1

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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