An issue was discovered in Asterisk Open Source 13.x before 13.21.1, 14.x before 14.7.7, and 15.x before 15.4.1 and Certified Asterisk 13.18-cert before 13.18-cert4 and 13.21-cert before 13.21-cert2. When endpoint specific ACL rules block a SIP request, they respond with a 403 forbidden. However, if an endpoint is not identified, then a 401 unauthorized response is sent. This vulnerability just discloses which requests hit a defined endpoint. The ACL rules cannot be bypassed to gain access to the disclosed endpoints.
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{ "binaries": [ { "binary_version": "1:13.18.3~dfsg-1ubuntu4", "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-dev" }, { "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" } ] }