CVE-2021-39240 — Improper Input Validation in Haproxy

CWE-20 — Improper Input Validation5 documents5 sources
Severity
7.5HIGHNVD
EPSS
0.1%
top 79.78%
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 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. It does not ensure that the scheme and path portions of a URI have the expected characters. For example, the authority field (as observed on a target HTTP/2 server) might differ from what the routing rules were intended to achieve.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NExploitability: 3.9 | Impact: 3.6

Affected Packages3 packages

▶debiandebian/haproxy< haproxy 2.2.16-1 (bookworm)
▶NVDhaproxy/haproxy2.2.0 — 2.2.16+2
▶Debianhaproxy/haproxy< 2.2.9-2+deb11u1+3

Also affects: Debian Linux 11.0, Fedora 33, 34

🔴Vulnerability Details

2
GHSA
GHSA-88gq-424p-x3xc: An issue was discovered in HAProxy 2↗2022-05-24
▶
OSV
CVE-2021-39240: An issue was discovered in HAProxy 2↗2021-08-17
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📋Vendor Advisories

2
Red Hat
haproxy: does not ensure that the scheme and path portions of a URI have the expected characters↗2021-08-17
▶
Debian
CVE-2021-39240: haproxy - An issue was discovered in HAProxy 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4...↗2021
▶
CVE-2021-39240 — Improper Input Validation in Haproxy | cvebase