{"id":"UBUNTU-CVE-2023-45288","details":"An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's headers exceed MaxHeaderBytes, no memory is allocated to store the excess headers, but they are still parsed. This permits an attacker to cause an HTTP/2 endpoint to read arbitrary amounts of header data, all associated with a request which is going to be rejected. These headers can include Huffman-encoded data which is significantly more expensive for the receiver to decode than for an attacker to send. The fix sets a limit on the amount of excess header frames we will process before closing a connection.","modified":"2026-02-04T02:17:54.532076Z","published":"2024-03-27T00:00:00Z","related":["USN-6886-1","USN-7109-1","USN-7111-1"],"upstream":["CVE-2023-45288"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-45288"},{"type":"REPORT","url":"https://kb.cert.org/vuls/id/421644"},{"type":"REPORT","url":"https://go.dev/cl/576155"},{"type":"REPORT","url":"https://pkg.go.dev/vuln/GO-2024-2687"},{"type":"REPORT","url":"https://groups.google.com/g/golang-announce/c/YgW0sx8mN3M"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-45288"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6886-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7109-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7111-1"}],"affected":[{"package":{"name":"golang-1.10","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/golang-1.10@1.10.4-2ubuntu1~14.04.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.4-2ubuntu1~14.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.10.4-2ubuntu1~14.04.1","binary_name":"golang-1.10"},{"binary_version":"1.10.4-2ubuntu1~14.04.1","binary_name":"golang-1.10-go"},{"binary_version":"1.10.4-2ubuntu1~14.04.1","binary_name":"golang-1.10-src"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-45288.json"}},{"package":{"name":"golang-1.10","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/golang-1.10@1.10.4-2ubuntu1~16.04.2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.4-2ubuntu1~16.04.1","1.10.4-2ubuntu1~16.04.2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.10.4-2ubuntu1~16.04.2","binary_name":"golang-1.10"},{"binary_version":"1.10.4-2ubuntu1~16.04.2","binary_name":"golang-1.10-go"},{"binary_version":"1.10.4-2ubuntu1~16.04.2","binary_name":"golang-1.10-src"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-45288.json"}},{"package":{"name":"golang-1.6","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/golang-1.6@1.6.2-0ubuntu5~16.04.4?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6-0ubuntu1","1.6-0ubuntu2","1.6-0ubuntu3","1.6-0ubuntu4","1.6-0ubuntu5","1.6.1-0ubuntu1","1.6.2-0ubuntu5~16.04","1.6.2-0ubuntu5~16.04.2","1.6.2-0ubuntu5~16.04.3","1.6.2-0ubuntu5~16.04.4"],"ecosystem_specific":{"binaries":[{"binary_version":"1.6.2-0ubuntu5~16.04.4","binary_name":"golang-1.6"},{"binary_version":"1.6.2-0ubuntu5~16.04.4","binary_name":"golang-1.6-go"},{"binary_version":"1.6.2-0ubuntu5~16.04.4","binary_name":"golang-1.6-src"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-45288.json"}},{"package":{"name":"golang-1.13","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/golang-1.13@1.13.8-1ubuntu1~16.04.3+esm3?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.13.8-1ubuntu1~16.04.2","1.13.8-1ubuntu1~16.04.3","1.13.8-1ubuntu1~16.04.3+esm2","1.13.8-1ubuntu1~16.04.3+esm3"],"ecosystem_specific":{"binaries":[{"binary_version":"1.13.8-1ubuntu1~16.04.3+esm3","binary_name":"golang-1.13"},{"binary_version":"1.13.8-1ubuntu1~16.04.3+esm3","binary_name":"golang-1.13-go"},{"binary_version":"1.13.8-1ubuntu1~16.04.3+esm3","binary_name":"golang-1.13-src"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-45288.json"}},{"package":{"name":"golang-1.18","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/golang-1.18@1.18.1-1ubuntu1~16.04.6+esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.1-1ubuntu1~16.04.6+esm1"}]}],"versions":["1.18.1-1ubuntu1~16.04.6"],"ecosystem_specific":{"binaries":[{"binary_version":"1.18.1-1ubuntu1~16.04.6+esm1","binary_name":"golang-1.18"},{"binary_version":"1.18.1-1ubuntu1~16.04.6+esm1","binary_name":"golang-1.18-go"},{"binary_version":"1.18.1-1ubuntu1~16.04.6+esm1","binary_name":"golang-1.18-src"}],"availability":"Available 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subscription 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