CVE Vulnerabilities

CVE-2023-0836

Incomplete Cleanup

Published: Mar 29, 2023 | Modified: Nov 07, 2023
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

An information leak vulnerability was discovered in HAProxy 2.1, 2.2 before 2.2.27, 2.3, 2.4 before 2.4.21, 2.5 before 2.5.11, 2.6 before 2.6.8, 2.7 before 2.7.1. There are 5 bytes left uninitialized in the connection buffer when encoding the FCGI_BEGIN_REQUEST record. Sensitive data may be disclosed to configured FastCGI backends in an unexpected way.

Weakness

The product does not properly “clean up” and remove temporary or supporting resources after they have been used.

Affected Software

Name Vendor Start Version End Version
Haproxy Haproxy 2.7.0 2.7.0
Haproxy Haproxy 2.6.0 2.6.8
Haproxy Haproxy 2.5.0 2.5.11
Haproxy Haproxy 2.4.0 2.4.21
Haproxy Haproxy 2.3.0 2.3.0
Haproxy Haproxy 2.2.0 *
Haproxy Haproxy 2.1.0 2.1.0

Potential Mitigations

References