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.
Metrics
Affected Vendors & Products
References
History
Mon, 20 Oct 2025 18:00:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Sangoma
Sangoma asterisk |
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| CPEs | cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Sangoma
Sangoma asterisk |
Thu, 28 Aug 2025 21:30:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Asterisk
Asterisk asterisk |
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| Vendors & Products |
Asterisk
Asterisk asterisk |
Thu, 28 Aug 2025 18:15:00 +0000
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| Metrics |
ssvc
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Thu, 28 Aug 2025 15:45:00 +0000
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| Description | 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. | |
| Title | Asterisk can crash from a specifically malformed Authorization header in an incoming SIP request | |
| Weaknesses | CWE-253 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-08-28T17:12:35.539Z
Reserved: 2025-08-19T15:16:22.917Z
Link: CVE-2025-57767
Updated: 2025-08-28T17:12:32.076Z
Status : Analyzed
Published: 2025-08-28T16:15:35.410
Modified: 2025-10-20T17:51:12.860
Link: CVE-2025-57767
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