CVE-2020-11100 describes a heap-based buffer overflow vulnerability in the HPACK decoder of HAProxy versions 1.8 through 2.1.3. A remote attacker can exploit this flaw by sending a specially crafted HTTP/2 request, potentially leading to arbitrary byte writes on the heap. This vulnerability carries a high CVSS score of 8.8, indicating a critical risk with network-based exploitation, low attack complexity, and high impact on confidentiality, integrity, and availability, including the possibility of remote code execution. While the EPSS score suggests a higher-than-average exploitability probability, there is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 1.8.0, < 2.1.4CPE matchmatch criteria | cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | ||
3.11CPE matchmatch criteria | cpe:2.3:a:redhat:openshift_container_platform:3.11:*:*:*:*:*:*:* | ||
4.0CPE matchmatch criteria | cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* | ||
30CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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