CVE-2021-39241 — Improper Input Validation in Haproxy

CWE-20 — Improper Input Validation5 documents5 sources
Severity
5.3MEDIUMNVD
EPSS
0.4%
top 36.60%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
HaproxyDebian HaproxyDebian Linux+1 more
Timeline
PublishedAug 17
Latest updateMay 24

Description

An issue was discovered in HAProxy 2.0 before 2.0.24, 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. An HTTP method name may contain a space followed by the name of a protected resource. It is possible that a server would interpret this as a request for that protected resource, such as in the "GET /admin? HTTP/1.1 /static/images HTTP/1.1" example.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NExploitability: 3.9 | Impact: 1.4

Affected Packages3 packages

▶debiandebian/haproxy< haproxy 2.2.16-1 (bookworm)
▶NVDhaproxy/haproxy2.0.0 — 2.0.24+3
▶Debianhaproxy/haproxy< 2.2.9-2+deb11u1+3

Also affects: Debian Linux 11.0, Fedora 33, 34

🔴Vulnerability Details

2
GHSA
GHSA-6x47-wc8c-3q36: An issue was discovered in HAProxy 2↗2022-05-24
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OSV
CVE-2021-39241: An issue was discovered in HAProxy 2↗2021-08-17
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📋Vendor Advisories

2
Red Hat
haproxy: an HTTP method name may contain a space followed by the name of a protected resource↗2021-08-17
▶
Debian
CVE-2021-39241: haproxy - An issue was discovered in HAProxy 2.0 before 2.0.24, 2.2 before 2.2.16, 2.3 bef...↗2021
▶