CVE-2023-0836

Severity CVSS v4.0:

Pending analysis

Type:

CWE-200 Information Leak / Disclosure

Publication date:

29/03/2023

Last modified:

18/02/2025

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

Base Score 3.x

7.50

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:haproxy:haproxy::::::::	2.2.0 (including)	2.2.27 (excluding)
cpe:2.3:a:haproxy:haproxy::::::::	2.4.0 (including)	2.4.21 (including)
cpe:2.3:a:haproxy:haproxy::::::::	2.5.0 (including)	2.5.11 (including)
cpe:2.3:a:haproxy:haproxy::::::::	2.6.0 (including)	2.6.8 (including)
cpe:2.3:a:haproxy:haproxy:2.1.0:::::::*
cpe:2.3:a:haproxy:haproxy:2.3.0:::::::*
cpe:2.3:a:haproxy:haproxy:2.7.0:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2023-0836

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools