{"id":"UBUNTU-CVE-2026-57195","details":"Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, a NULL pointer dereference in the `Asterisk Manager Interface (AMI)` may allow an unauthenticated attacker to crash Asterisk when `Digest Authentication` is used via `HTTP`. The Asterisk `HTTP` web server, AMI, and AMI access via `HTTP` must all be enabled; each is disabled by default. The attacker must be able to connect to the `HTTP` server, which binds only to `127.0.0.1` by default even when enabled. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.","modified":"2026-10-28T20:17:23.909567777Z","published":"2026-10-27T21:18:00Z","upstream":["CVE-2026-57195"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-57195"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-57195"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/security/advisories/GHSA-3rhj-hhw7-m6fw"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/commit/10c5b2efcacab03bf04a229f81cc24e76fe42c41"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/commit/362ef847e7e057b7626e476ddcfe7328ea314db4"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/commit/5d5d8d8ef7f16774820b1889ae73d8d2ab14af45"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/commit/87a1f43e4c465b885163665aa89172ed0f392663"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/commit/a1fcfdf9b91ed58cc8fb9da8d135da60bae7345d"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/commit/abba42c58fee2226a709583afdbeec75cf1dde8b"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/commit/fff89162cdd702e8a143701f138edd8dceab154f"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/releases/tag/20.20.1"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/releases/tag/21.12.3"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/releases/tag/22.10.1"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/releases/tag/23.4.1"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3"},{"type":"REPORT","url":"https://github.com/asterisk/asterisk/tree/24.0.0-pre1"}],"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_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1","binary_name":"asterisk-config"},{"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_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1","binary_name":"asterisk-ooh323"},{"binary_name":"asterisk-voicemail","binary_version":"1:13.1.0~dfsg-1.1ubuntu4.1+esm1"},{"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"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57195.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_version":"1:13.18.3~dfsg-1ubuntu4","binary_name":"asterisk-dahdi"},{"binary_name":"asterisk-mobile","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"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_name":"asterisk-mysql","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_version":"1:13.18.3~dfsg-1ubuntu4","binary_name":"asterisk-ooh323"},{"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_version":"1:13.18.3~dfsg-1ubuntu4","binary_name":"asterisk-voicemail-imapstorage"},{"binary_name":"asterisk-voicemail-odbcstorage","binary_version":"1:13.18.3~dfsg-1ubuntu4"},{"binary_version":"1:13.18.3~dfsg-1ubuntu4","binary_name":"asterisk-vpb"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-57195.json"}},{"package":{"name":"asterisk","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/asterisk?arch=source&dis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