An HTTP Request Forgery issue was discovered in Varnish Cache 5.x and 6.x before 6.0.11, 7.x before 7.1.2, and 7.2.x before 7.2.1. An attacker may introduce characters through HTTP/2 pseudo-headers that are invalid in the context of an HTTP/1 request line, causing the Varnish server to produce invalid HTTP/1 requests to the backend. This could, in turn, be used to exploit vulnerabilities in a server behind the Varnish server. Note: the 6.0.x LTS series (before 6.0.11) is affected.
{ "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "5.2.1-1ubuntu0.1+esm1", "binary_name": "libvarnishapi-dev" }, { "binary_version": "5.2.1-1ubuntu0.1+esm1", "binary_name": "libvarnishapi1" }, { "binary_version": "5.2.1-1ubuntu0.1+esm1", "binary_name": "libvarnishapi1-dbgsym" }, { "binary_version": "5.2.1-1ubuntu0.1+esm1", "binary_name": "varnish" }, { "binary_version": "5.2.1-1ubuntu0.1+esm1", "binary_name": "varnish-dbgsym" }, { "binary_version": "5.2.1-1ubuntu0.1+esm1", "binary_name": "varnish-doc" } ] }
{ "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "6.2.1-2ubuntu0.2+esm1", "binary_name": "libvarnishapi-dev" }, { "binary_version": "6.2.1-2ubuntu0.2+esm1", "binary_name": "libvarnishapi2" }, { "binary_version": "6.2.1-2ubuntu0.2+esm1", "binary_name": "libvarnishapi2-dbgsym" }, { "binary_version": "6.2.1-2ubuntu0.2+esm1", "binary_name": "varnish" }, { "binary_version": "6.2.1-2ubuntu0.2+esm1", "binary_name": "varnish-dbgsym" }, { "binary_version": "6.2.1-2ubuntu0.2+esm1", "binary_name": "varnish-doc" } ] }
{ "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "6.6.1-1ubuntu0.2+esm1", "binary_name": "libvarnishapi-dev" }, { "binary_version": "6.6.1-1ubuntu0.2+esm1", "binary_name": "libvarnishapi2" }, { "binary_version": "6.6.1-1ubuntu0.2+esm1", "binary_name": "libvarnishapi2-dbgsym" }, { "binary_version": "6.6.1-1ubuntu0.2+esm1", "binary_name": "varnish" }, { "binary_version": "6.6.1-1ubuntu0.2+esm1", "binary_name": "varnish-dbgsym" }, { "binary_version": "6.6.1-1ubuntu0.2+esm1", "binary_name": "varnish-doc" } ] }