CVE-2020-11100
HIGH severity · CVSS 8.8 · Out-of-bounds write
8.8CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)74%
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://www.haproxy.orgAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00002.htmlAdvisory
- http://packetstormsecurity.com/files/157323/haproxy-hpack-tbl.c-Out-Of-Bounds-Write.htmlAdvisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1819111Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1168023Advisory
- https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=5dfc5d5cd0d2128d77253ead3acf03a421ab5b88
- https://lists.debian.org/debian-security-announce/2020/msg00052.htmlAdvisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/264C7UL3X7L7QE74ZJ557IOUFS3J4QQC/