CVE-2025-57767 (GCVE-0-2025-57767)

Vulnerability from cvelistv5 – Published: 2025-08-28 15:33 – Updated: 2025-08-28 17:12
VLAI
Title
Asterisk can crash from a specifically malformed Authorization header in an incoming SIP request
Summary
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
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-28 17:12 UTC
CWE
  • CWE-253 - Incorrect Check of Function Return Value
Assigner
References
Impacted products
Vendor Product Version
asterisk asterisk Affected: < 22.5.2
Affected: < 21.10.2
Affected: < 20.15.2
Create a notification for this product.
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