Vulnerabilities > CVE-2021-39240

CVSS 7.5 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

HIGH

Integrity impact

NONE

Availability impact

NONE

network

low complexity

haproxy

debian

fedoraproject

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 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.

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

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Summary

Vulnerable Configurations

References

Vulnerabilities > CVE-2021-39240