CVE-2025-57767

Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.15.2, 21.10.2, and 22.5.2, if a SIP request is received with an Authorization header that contains a realm that wasn't in a previous 401 response's WWW-Authenticate header, or an Authorization header with an incorrect realm was received without a previous 401 response being sent, the get_authorization_header() function in res_pjsip_authenticator_digest will return a NULL. This wasn't being checked before attempting to get the digest algorithm from the header which causes a SEGV. This issue has been patched in versions 20.15.2, 21.10.2, and 22.5.2. There are no workarounds.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/asterisk/asterisk/commit/02993717b08f899d4aca9888062f35dfb198584f	Patch
https://github.com/asterisk/asterisk/pull/1407	Issue Tracking Patch
https://github.com/asterisk/asterisk/security/advisories/GHSA-64qc-9x89-rx5j	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:sangoma:asterisk::::::::
	cpe:2.3:a:sangoma:asterisk::::::::
	cpe:2.3:a:sangoma:asterisk::::::::

History

No history.

Information

Published : 2025-08-28 16:15

Updated : 2025-10-20 17:51

NVD link : CVE-2025-57767

Mitre link : CVE-2025-57767

CVE.ORG link : CVE-2025-57767

JSON object : View

Products Affected

sangoma

asterisk

CWE

CWE-253

Incorrect Check of Function Return Value

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