{"id":"USN-5474-1","summary":"varnish vulnerabilities","details":"It was dicovered that Varnish Cache did not clear a pointer between the\nhandling of one client request and the next request within the same connection.\nA remote attacker could possibly use this issue to obtain sensitive\ninformation. (CVE-2019-20637)\n\nIt was discovered that Varnish Cache could have an assertion failure when a\nTLS termination proxy uses PROXY version 2. A remote attacker could possibly\nuse this issue to restart the daemon and cause a performance loss.\n(CVE-2020-11653)\n\nIt was discovered that Varnish Cache allowed request smuggling and VCL\nauthorization bypass via a large Content-Length header for a POST\nrequest. A remote attacker could possibly use this issue to obtain sensitive\ninformation. (CVE-2021-36740)\n\nIt was discovered that Varnish Cache allowed request smuggling for HTTP/1\nconnections. A remote attacker could possibly use this issue to obtain\nsensitive information. (CVE-2022-23959)\n","modified":"2026-02-10T04:42:39Z","published":"2022-06-08T19:20:14Z","related":["UBUNTU-CVE-2019-20637","UBUNTU-CVE-2020-11653","UBUNTU-CVE-2021-36740","UBUNTU-CVE-2022-23959"],"upstream":["CVE-2019-20637","CVE-2020-11653","CVE-2021-36740","CVE-2022-23959","UBUNTU-CVE-2019-20637","UBUNTU-CVE-2020-11653","UBUNTU-CVE-2021-36740","UBUNTU-CVE-2022-23959"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5474-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-20637"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-11653"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-36740"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-23959"}],"affected":[{"package":{"name":"varnish","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/varnish@5.2.1-1ubuntu0.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.2.1-1ubuntu0.1"}]}],"versions":["5.0.0-7.1","5.2.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libvarnishapi-dev","binary_version":"5.2.1-1ubuntu0.1"},{"binary_name":"libvarnishapi1","binary_version":"5.2.1-1ubuntu0.1"},{"binary_name":"varnish","binary_version":"5.2.1-1ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5474-1.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2019-20637"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2022-23959"}],"ecosystem":"Ubuntu:18.04:LTS"}}},{"package":{"name":"varnish","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/varnish@6.2.1-2ubuntu0.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.2.1-2ubuntu0.1"}]}],"versions":["6.1.1-1","6.2.1-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libvarnishapi-dev","binary_version":"6.2.1-2ubuntu0.1"},{"binary_name":"libvarnishapi2","binary_version":"6.2.1-2ubuntu0.1"},{"binary_name":"varnish","binary_version":"6.2.1-2ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5474-1.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2019-20637"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}],"id":"CVE-2020-11653"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2021-36740"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2022-23959"}],"ecosystem":"Ubuntu:20.04:LTS"}}},{"package":{"name":"varnish","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/varnish@6.6.1-1ubuntu0.2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.1-1ubuntu0.2"}]}],"versions":["6.5.2-1","6.6.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libvarnishapi-dev","binary_version":"6.6.1-1ubuntu0.2"},{"binary_name":"libvarnishapi2","binary_version":"6.6.1-1ubuntu0.2"},{"binary_name":"varnish","binary_version":"6.6.1-1ubuntu0.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5474-1.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2022-23959"}],"ecosystem":"Ubuntu:22.04:LTS"}}}],"schema_version":"1.7.3"}