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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2023-02-14T00:00:00

Updated: 2024-08-02T11:32:11.848Z

Reserved: 2023-02-13T00:00:00

Link: CVE-2023-25725

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-02-14T19:15:11.530

Modified: 2024-11-21T07:50:01.400

Link: CVE-2023-25725

cve-icon Redhat

Severity : Important

Publid Date: 2023-02-14T16:20:00Z

Links: CVE-2023-25725 - Bugzilla