Improper Handling of Exceptional Conditions Affecting haproxy package, versions <2.2.9-2+deb11u1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.46% (76th percentile)

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  • Snyk IDSNYK-DEBIAN11-HAPROXY-1566774
  • published18 Aug 2021
  • disclosed17 Aug 2021

Introduced: 17 Aug 2021

CVE-2021-39242  (opens in a new tab)
CWE-755  (opens in a new tab)

How to fix?

Upgrade Debian:11 haproxy to version 2.2.9-2+deb11u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream haproxy package and not the haproxy package as distributed by Debian. See How to fix? for Debian:11 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