{"id":"UBUNTU-CVE-2026-45705","details":"OpenSIPS is a Session Initiation Protocol (SIP) server implementation. In versions prior to 3.6.6 and 4.0.0-rc1, the find_line_delimiter() function in the multipart body parser performs an out-of-bounds read via strncmp() when searching for MIME boundary delimiters. After finding a -- pattern near the end of the body, the function compares delimiter.len bytes (typically 20-70) starting from a position at or past the logical end of the body buffer, reading past the body boundary. The bug triggers when a SIP message has Content-Type: multipart/mixed with a boundary parameter and its body contains -- within two to three bytes of the body's end without being followed by the actual boundary delimiter. This issue has been fixed in versions 3.6.6 and 4.0.0-rc1.","modified":"2026-08-06T03:09:02.150029828Z","published":"2026-08-05T00:16:00Z","upstream":["CVE-2026-45705"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-45705"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-45705"},{"type":"REPORT","url":"https://github.com/OpenSIPS/opensips/commit/4d23613b65579b073784a07a65d3bf52443a4efb"},{"type":"REPORT","url":"https://github.com/OpenSIPS/opensips/commit/5f103effaf5f372cccffe0b138f16998eba12668"},{"type":"REPORT","url":"https://github.com/OpenSIPS/opensips/security/advisories/GHSA-chxf-9368-fqcp"}],"affected":[{"package":{"name":"opensips","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/opensips?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.2-3build2","2.2.2-3build3","2.2.2-3build4"],"ecosystem_specific":{"binaries":[{"binary_name":"opensips","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-b2bua-module","binary_version":"2.2.2-3build4"},{"binary_version":"2.2.2-3build4","binary_name":"opensips-berkeley-bin"},{"binary_name":"opensips-berkeley-module","binary_version":"2.2.2-3build4"},{"binary_version":"2.2.2-3build4","binary_name":"opensips-carrierroute-module"},{"binary_name":"opensips-compression-module","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-console","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-cpl-module","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-dbhttp-module","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-dialplan-module","binary_version":"2.2.2-3build4"},{"binary_version":"2.2.2-3build4","binary_name":"opensips-emergency-module"},{"binary_version":"2.2.2-3build4","binary_name":"opensips-geoip-module"},{"binary_name":"opensips-http-modules","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-identity-module","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-jabber-module","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-json-module","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-ldap-modules","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-lua-module","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-memcached-module","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-mysql-module","binary_version":"2.2.2-3build4"},{"binary_version":"2.2.2-3build4","binary_name":"opensips-perl-modules"},{"binary_name":"opensips-postgres-module","binary_version":"2.2.2-3build4"},{"binary_version":"2.2.2-3build4","binary_name":"opensips-presence-modules"},{"binary_name":"opensips-rabbitmq-module","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-radius-modules","binary_version":"2.2.2-3build4"},{"binary_version":"2.2.2-3build4","binary_name":"opensips-redis-module"},{"binary_name":"opensips-regex-module","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-restclient-module","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-sctp-module","binary_version":"2.2.2-3build4"},{"binary_version":"2.2.2-3build4","binary_name":"opensips-snmpstats-module"},{"binary_name":"opensips-sqlite-module","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-tls-module","binary_version":"2.2.2-3build4"},{"binary_version":"2.2.2-3build4","binary_name":"opensips-tlsmgm-module"},{"binary_version":"2.2.2-3build4","binary_name":"opensips-unixodbc-module"},{"binary_name":"opensips-wss-module","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-xmlrpc-module","binary_version":"2.2.2-3build4"},{"binary_name":"opensips-xmpp-module","binary_version":"2.2.2-3build4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45705.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}