Improper Input Validation Affecting haproxy package, versions *


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.46% (76th percentile)

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  • Snyk IDSNYK-RHEL9-HAPROXY-3479236
  • published1 Nov 2021
  • disclosed17 Aug 2021

Introduced: 17 Aug 2021

CVE-2021-39242  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:9 haproxy.

NVD Description

Note: Versions mentioned in the description apply only to the upstream haproxy package and not the haproxy package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

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 can lead to a situation with an attacker-controlled HTTP Host header, because a mismatch between Host and authority is mishandled.

CVSS Scores

version 3.1