high7.5
CVE-2025-57767
Asterisk is an open source private branch exchange and telephony toolkit.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Sangoma | Asterisk | before 20.15.2 from 21.0.0 before 21.10.2 from 22.0.0 before 22.5.2 |