Vulnerabilities > CVE-2021-39242 - Improper Handling of Exceptional Conditions vulnerability in multiple products

CVSS 7.5 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

HIGH

Availability impact

NONE

network

low complexity

NVD

Published: 2021-08-17

Updated: 2024-11-21

Summary

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.

Vulnerable Configurations

Part	Description	Count
Application	Haproxy Haproxy Haproxy 2.4.0 Haproxy Haproxy 2.4.1 Haproxy Haproxy 2.4.2 Haproxy Haproxy 2.3.0 Haproxy Haproxy 2.3.1 Haproxy Haproxy 2.3.2 Haproxy Haproxy 2.3.3 Haproxy Haproxy 2.3.4 Haproxy Haproxy 2.3.5 Haproxy Haproxy 2.3.6 Haproxy Haproxy 2.3.7 Haproxy Haproxy 2.3.8 Haproxy Haproxy 2.3.9 Haproxy Haproxy 2.3.10 Haproxy Haproxy 2.3.11 Haproxy Haproxy 2.3.12 Haproxy Haproxy 2.2.0 Haproxy Haproxy 2.2.1 Haproxy Haproxy 2.2.2 Haproxy Haproxy 2.2.3 Haproxy Haproxy 2.2.4 Haproxy Haproxy 2.2.5 Haproxy Haproxy 2.2.6 Haproxy Haproxy 2.2.7 Haproxy Haproxy 2.2.8 Haproxy Haproxy 2.2.9 Haproxy Haproxy 2.2.10 Haproxy Haproxy 2.2.11 Haproxy Haproxy 2.2.12 Haproxy Haproxy 2.2.13 Haproxy Haproxy 2.2.14 Haproxy Haproxy 2.2.15	32
OS	Debian Debian Debian Linux 11.0	1
OS	Fedoraproject Fedoraproject Fedora 33 Fedoraproject Fedora 34	2

Common Weakness Enumeration (CWE)

CWE-755 - Improper Handling of Exceptional Conditions

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

References