{"id":"CVE-2020-11100","details":"In hpack_dht_insert in hpack-tbl.c in the HPACK decoder in HAProxy 1.8 through 2.x before 2.1.4, a remote attacker can write arbitrary bytes around a certain location on the heap via a crafted HTTP/2 request, possibly causing remote code execution.","aliases":["BIT-haproxy-2020-11100"],"modified":"2026-05-18T05:50:51.056826795Z","published":"2020-04-02T15:15:17.483Z","related":["SUSE-SU-2020:0851-1","SUSE-SU-2020:0852-1","openSUSE-SU-2020:0444-1","openSUSE-SU-2024:10839-1"],"database_specific":{"unresolved_ranges":[{"cpes":["cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*","cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*"],"vendor_product":"canonical:ubuntu_linux","source":"CPE_FIELD","extracted_events":[{"last_affected":"18.04"},{"last_affected":"19.10"}]},{"cpes":["cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"],"vendor_product":"debian:debian_linux","source":"CPE_FIELD","extracted_events":[{"last_affected":"10.0"}]},{"cpes":["cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*","cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*"],"vendor_product":"fedoraproject:fedora","source":"CPE_FIELD","extracted_events":[{"last_affected":"30"},{"last_affected":"31"}]},{"cpes":["cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*"],"vendor_product":"opensuse:leap","source":"CPE_FIELD","extracted_events":[{"last_affected":"15.1"}]},{"cpes":["cpe:2.3:a:redhat:openshift_container_platform:3.11:*:*:*:*:*:*:*","cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*"],"vendor_product":"redhat:openshift_container_platform","source":"CPE_FIELD","extracted_events":[{"last_affected":"3.11"},{"last_affected":"4.0"}]}]},"references":[{"type":"WEB","url":"https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=5dfc5d5cd0d2128d77253ead3acf03a421ab5b88"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/264C7UL3X7L7QE74ZJ557IOUFS3J4QQC/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MNW5RZLIX7LOXRLV7WMHX22CI43XSXKW/"},{"type":"WEB","url":"https://www.mail-archive.com/haproxy%40formilux.org/msg36876.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00002.html"},{"type":"ADVISORY","url":"http://packetstormsecurity.com/files/157323/haproxy-hpack-tbl.c-Out-Of-Bounds-Write.html"},{"type":"ADVISORY","url":"http://www.haproxy.org"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-security-announce/2020/msg00052.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202012-22"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4321-1/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2020/dsa-4649"},{"type":"ADVISORY","url":"https://www.haproxy.org/download/2.1/src/CHANGELOG"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1819111"},{"type":"REPORT","url":"https://bugzilla.suse.com/show_bug.cgi?id=1168023"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/haproxy/haproxy","events":[{"introduced":"0b78792bbe61fec420e4e7298d145ec7d498f8f2"},{"fixed":"1753cb544dd19714daecb9c6c4b0d07b6abf40f2"}],"database_specific":{"extracted_events":[{"introduced":"1.8.0"},{"fixed":"2.1.4"}],"cpe":"cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*","source":"CPE_FIELD"}}],"versions":["v2.1-dev3","v2.1-dev2","v2.1-dev1","v2.1-dev0","v2.0.0","v2.0-dev7","v2.0-dev6","v2.0-dev5","v2.0-dev4","v2.0-dev3","v2.0-dev2","v2.0-dev1","v2.0-dev0","v1.9.0","v1.9-dev11","v1.9-dev10","v1.9-dev9","v1.9-dev8","v1.9-dev7","v1.9-dev6","v1.9-dev5","v1.9-dev4","v1.9-dev3","v1.9-dev2","v1.9-dev1","v1.9-dev0","v1.8.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-11100.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}