{"id":"UBUNTU-CVE-2020-27507","details":"The Kamailio SIP before 5.5.0 server mishandles INVITE requests with duplicated fields and overlength tag, leading to a buffer overflow that crashes the server or possibly have unspecified other impact.","modified":"2026-01-30T00:37:07.881172Z","published":"2023-03-15T20:15:00Z","related":["USN-6022-1"],"upstream":["CVE-2020-27507"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-27507"},{"type":"REPORT","url":"https://github.com/kamailio/kamailio/commit/ada3701d22b1fd579f06b4f54fa695fa988e685f"},{"type":"REPORT","url":"https://github.com/kamailio/kamailio/issues/2503"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6022-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-27507"}],"affected":[{"package":{"name":"kamailio","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/kamailio@4.3.4-1.1ubuntu2.1+esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.4-1.1ubuntu2.1+esm1"}]}],"versions":["4.3.1-2ubuntu1","4.3.4-1.1ubuntu1","4.3.4-1.1ubuntu2","4.3.4-1.1ubuntu2.1"],"ecosystem_specific":{"binaries":[{"binary_name":"kamailio","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-autheph-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-berkeley-bin","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-berkeley-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-carrierroute-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-cnxcc-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-cpl-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_version":"4.3.4-1.1ubuntu2.1+esm1","binary_name":"kamailio-dnssec-modules"},{"binary_name":"kamailio-erlang-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_version":"4.3.4-1.1ubuntu2.1+esm1","binary_name":"kamailio-extra-modules"},{"binary_name":"kamailio-geoip-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-ims-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-java-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-json-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-kazoo-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-ldap-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-lua-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-memcached-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_version":"4.3.4-1.1ubuntu2.1+esm1","binary_name":"kamailio-mono-modules"},{"binary_version":"4.3.4-1.1ubuntu2.1+esm1","binary_name":"kamailio-mysql-modules"},{"binary_name":"kamailio-outbound-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-perl-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-postgres-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-presence-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-purple-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-python-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_version":"4.3.4-1.1ubuntu2.1+esm1","binary_name":"kamailio-radius-modules"},{"binary_name":"kamailio-redis-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-sctp-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-snmpstats-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-sqlite-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-tls-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-unixodbc-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-utils-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-websocket-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-xml-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"},{"binary_name":"kamailio-xmpp-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm1"}],"availability":"Available 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