Red Hat: CVE-2023-25725: request smuggling attack in HTTP/1 header parsing (Multiple Advisories)

Red Hat: CVE-2023-25725: request smuggling attack in HTTP/1 header parsing (Multiple Advisories)

Severity

9

CVSS

(AV:N/AC:L/Au:N/C:N/I:C/A:C)

Published

02/14/2023

Created

05/05/2023

Added

04/12/2023

Modified

01/30/2025

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.

Solution(s)

• redhat-upgrade-haproxy
• redhat-upgrade-haproxy-debuginfo
• redhat-upgrade-haproxy-debugsource

References

• CVE-2023-25725
• RHSA-2023:1696
• RHSA-2023:1978