CVE-2023-0836

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.

Affected products

Alt Linux, Almalinux, Astra Linux, Haproxy, Linuxmint, Red Hat, Ubuntu

Haproxy

< 2.2.27, 2.4.21, 2.5.11, 2.6.8, 2.1.0, 2.3.0, 2.7.0

Fix

Available

CVSS 3.1

7.5 HIGH

EPSS

1.2% (65th percentile)

Weakness

CWE-459, CWE-200

NVD status

Modified

Published

2023-03-29

No exploit for CVE-2023-0836 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.