Improper Handling of Exceptional Conditions Affecting haproxy package, versions <2.2.9-1ubuntu0.1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.68% (81st percentile)

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  • Snyk IDSNYK-UBUNTU2104-HAPROXY-1567460
  • published19 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 Ubuntu:21.04 haproxy to version 2.2.9-1ubuntu0.1 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 Ubuntu. See How to fix? for Ubuntu:21.04 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