CVE-2023-0836 — Sensitive Information Exposure in Haproxy

CWE-200 — Sensitive Information ExposureCWE-459 — Incomplete Cleanup6 documents6 sources
Severity
7.5HIGHNVD
EPSS
0.0%
top 99.72%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
HaproxyDebian Haproxy
Timeline
PublishedMar 29
Latest updateApr 3

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NExploitability: 3.9 | Impact: 3.6

Affected Packages4 packages

▶debiandebian/haproxy< haproxy 2.6.8-1 (bookworm)
▶NVDhaproxy/haproxy2.2.0 — 2.2.27+6
▶Debianhaproxy/haproxy< 2.2.9-2+deb11u5+3
▶CVEListV5haproxy/haproxyHAProxy 2.8, HAProxy 2.7.1, HAProxy 2.6.8, HAProxy 2.5.11, HAProxy 2.4.21, HAProxy 2.2.27

🔴Vulnerability Details

2
OSV
CVE-2023-0836: An information leak vulnerability was discovered in HAProxy 2↗2023-03-29
▶
GHSA
GHSA-xhfw-qhxr-hjhq: An information leak vulnerability was discovered in HAProxy 2↗2023-03-29
▶

📋Vendor Advisories

3
Ubuntu
HAProxy vulnerability↗2023-04-03
▶
Debian
CVE-2023-0836: haproxy - An information leak vulnerability was discovered in HAProxy 2.1, 2.2 before 2.2....↗2023
▶
Red Hat
haproxy: data leak via fcgi requests↗2022-12-09
▶
CVE-2023-0836 — Sensitive Information Exposure | cvebase