Bug 2391498 (CVE-2025-57767) - CVE-2025-57767 asterisk: Asterisk denial of service via malformed SIP request
Summary: CVE-2025-57767 asterisk: Asterisk denial of service via malformed SIP request
Keywords:
Status: NEW
Alias: CVE-2025-57767
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2391515 2391516 2391517 2391518
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-08-28 16:01 UTC by OSIDB Bzimport
Modified: 2025-08-28 17:28 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2025-08-28 16:01:19 UTC 
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.
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