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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

7.5

Related Resources (9)

Url: http://seclists.org/fulldisclosure/2021/Feb/59

Url: https://security.alpinelinux.org/vuln/CVE-2021-26712

Url: https://downloads.asterisk.org/pub/security/

Url: http://packetstormsecurity.com/files/161473/Asterisk-Project-Security-Advisory-AST-2021-003.html

Url: https://downloads.asterisk.org/pub/security/AST-2021-003.html

Url: https://issues.asterisk.org/jira/browse/ASTERISK-29260

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2021-26712

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-26712

Url: https://www.mend.io/vulnerability-database/CVE-2021-26712

Severity Score

7.5

CVSS v3.1

Base Score:	7.5
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:	5.0
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL
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