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CVE-2025-57767
Good to know:
Date: August 28, 2025
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.
Severity Score
Related Resources (6)
Severity Score
Weakness Type (CWE)
Incorrect Check of Function Return Value
CWE-253Top Fix
Upgrade Version
Upgrade to version https://github.com/asterisk/asterisk.git - 20.15.2;https://github.com/asterisk/asterisk.git - 21.10.2;https://github.com/asterisk/asterisk.git - 22.5.2
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 |