{"id":"UBUNTU-CVE-2025-57767","details":"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.","modified":"2026-05-20T16:23:38.877966141Z","published":"2025-08-28T16:15:00Z","upstream":["CVE-2025-57767"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-57767"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-57767"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/security/advisories/GHSA-64qc-9x89-rx5j"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/pull/1407"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/commit/02993717b08f899d4aca9888062f35dfb198584f"}],"affected":[{"package":{"name":"asterisk","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/asterisk?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:13.1.0~dfsg-1.1ubuntu3","1:13.1.0~dfsg-1.1ubuntu4","1:13.1.0~dfsg-1.1ubuntu4.1","1:13.1.0~dfsg-1.1ubuntu4.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"asterisk","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-config","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-dahdi","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-mobile","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-modules","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-mp3","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-mysql","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-ooh323","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-voicemail","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-voicemail-imapstorage","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-voicemail-odbcstorage","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"binary_name":"asterisk-vpb","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-57767.json"}},{"package":{"name":"asterisk","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/asterisk?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:13.17.2~dfsg-1ubuntu1","1:13.17.2~dfsg-2ubuntu1","1:13.18.1~dfsg-1ubuntu1","1:13.18.3~dfsg-1ubuntu1","1:13.18.3~dfsg-1ubuntu2","1:13.18.3~dfsg-1ubuntu3","1:13.18.3~dfsg-1ubuntu4"],"ecosystem_specific":{"binaries":[{"binary_name":"asterisk","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_name":"asterisk-config","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_name":"asterisk-dahdi","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_name":"asterisk-mobile","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_name":"asterisk-modules","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_name":"asterisk-mp3","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_name":"asterisk-mysql","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_name":"asterisk-ooh323","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_name":"asterisk-tests","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_name":"asterisk-voicemail","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_name":"asterisk-voicemail-imapstorage","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_name":"asterisk-voicemail-odbcstorage","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_name":"asterisk-vpb","binary_version":"1:13.18.3~dfsg-1ubuntu4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-57767.json"}},{"package":{"name":"asterisk","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/asterisk?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:16.2.1~dfsg-2build2","1:16.2.1~dfsg-2build3","1:16.2.1~dfsg-2ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"asterisk","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_name":"asterisk-config","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_name":"asterisk-dahdi","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_name":"asterisk-mobile","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_name":"asterisk-modules","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_name":"asterisk-mp3","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_name":"asterisk-mysql","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_name":"asterisk-ooh323","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_name":"asterisk-tests","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_name":"asterisk-voicemail","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_name":"asterisk-voicemail-imapstorage","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_name":"asterisk-voicemail-odbcstorage","binary_version":"1:16.2.1~dfsg-2ubuntu1"},{"binary_name":"asterisk-vpb","binary_version":"1:16.2.1~dfsg-2ubuntu1"}]},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