CVE-2023-25725

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

14/02/2023

Last modified:

20/03/2025

Description

HAProxy before 2.7.3 may allow a bypass of access control because HTTP/1 headers are inadvertently lost in some situations, aka "request smuggling." The HTTP header parsers in HAProxy may accept empty header field names, which could be used to truncate the list of HTTP headers and thus make some headers disappear after being parsed and processed for HTTP/1.0 and HTTP/1.1. For HTTP/2 and HTTP/3, the impact is limited because the headers disappear before being parsed and processed, as if they had not been sent by the client. The fixed versions are 2.7.3, 2.6.9, 2.5.12, 2.4.22, 2.2.29, and 2.0.31.

Impact

Vector 3.x

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

Base Score: 9.10 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

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

Base Score 3.x

9.10

Severity 3.x

CRITICAL

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:haproxy:haproxy::::::::		2.0.31 (excluding)
cpe:2.3:a:haproxy:haproxy::::::::	2.1.0 (including)	2.2.29 (excluding)
cpe:2.3:a:haproxy:haproxy::::::::	2.3.0 (including)	2.4.22 (excluding)
cpe:2.3:a:haproxy:haproxy::::::::	2.5.0 (including)	2.5.12 (excluding)
cpe:2.3:a:haproxy:haproxy::::::::	2.6.0 (including)	2.6.9 (excluding)
cpe:2.3:a:haproxy:haproxy::::::::	2.7.0 (including)	2.7.3 (excluding)
cpe:2.3:o:debian:debian_linux:10.0:::::::*
cpe:2.3:o:debian:debian_linux:11.0:::::::*

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

CVE-2023-25725

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools