{"id":"UBUNTU-CVE-2020-28361","details":"Kamailio before 5.4.0, as used in Sip Express Router (SER) in Sippy Softswitch 4.5 through 5.2 and other products, allows a bypass of a header-removal protection mechanism via whitespace characters. This occurs in the remove_hf function in the Kamailio textops module. Particular use of remove_hf in Sippy Softswitch may allow skilled attacker having a valid credential in the system to disrupt internal call start/duration accounting mechanisms leading potentially to a loss of revenue.","modified":"2026-01-30T00:28:44.914138Z","published":"2020-11-18T14:15:00Z","related":["USN-7416-1"],"upstream":["CVE-2020-28361"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-28361"},{"type":"REPORT","url":"https://packetstormsecurity.com/files/159030/Kamailio-5.4.0-Header-Smuggling.html"},{"type":"REPORT","url":"https://support.sippysoft.com/support/discussions/topics/3000179616"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-28361"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7416-1"}],"affected":[{"package":{"name":"kamailio","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/kamailio@4.3.4-1.1ubuntu2.1+esm2?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3.1-2ubuntu1","4.3.4-1.1ubuntu1","4.3.4-1.1ubuntu2","4.3.4-1.1ubuntu2.1","4.3.4-1.1ubuntu2.1+esm1","4.3.4-1.1ubuntu2.1+esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"4.3.4-1.1ubuntu2.1+esm2","binary_name":"kamailio"},{"binary_name":"kamailio-autheph-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-berkeley-bin","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-berkeley-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-carrierroute-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-cnxcc-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-cpl-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-dnssec-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-erlang-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_version":"4.3.4-1.1ubuntu2.1+esm2","binary_name":"kamailio-extra-modules"},{"binary_version":"4.3.4-1.1ubuntu2.1+esm2","binary_name":"kamailio-geoip-modules"},{"binary_name":"kamailio-ims-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-java-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-json-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-kazoo-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-ldap-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_version":"4.3.4-1.1ubuntu2.1+esm2","binary_name":"kamailio-lua-modules"},{"binary_name":"kamailio-memcached-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-mono-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-mysql-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-outbound-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-perl-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-postgres-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-presence-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-purple-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-python-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-radius-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-redis-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-sctp-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-snmpstats-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-sqlite-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_version":"4.3.4-1.1ubuntu2.1+esm2","binary_name":"kamailio-tls-modules"},{"binary_name":"kamailio-unixodbc-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-utils-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-websocket-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-xml-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"},{"binary_name":"kamailio-xmpp-modules","binary_version":"4.3.4-1.1ubuntu2.1+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-28361.json"}},{"package":{"name":"kamailio","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/kamailio@5.1.2-1ubuntu2+esm2?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.1.2-1ubuntu2+esm2"}]}],"versions":["4.4.2-3ubuntu5","5.0.4-1ubuntu1","5.1.1-1ubuntu1","5.1.1-1ubuntu4","5.1.2-1ubuntu1","5.1.2-1ubuntu2","5.1.2-1ubuntu2+esm1"],"ecosystem_specific":{"availability":"Available 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