Bug 2317051 (CVE-2024-8927)

Summary:	CVE-2024-8927 php: cgi.force_redirect configuration is bypassable due to the environment variable collision
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
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Doc Text:	A flaw was found in PHP. The configuration directive `cgi.force_redirect` prevents anyone from calling PHP directly with a URL such as http://host.example/cgi-bin/php/secretdir/script.php. However, in certain uncommon configurations, an attacker may be able to bypass this restriction and access php-cgi directly.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2024-10-07 19:56:22 UTC

According to https://www.php.net/manual/en/security.cgi-bin.force-redirect.php, the configuration directive cgi.force_redirect prevents anyone from calling PHP directly with a URL like http://host.example/cgi-bin/php/secretdir/script.php.
The default value of cgi.force_redirect is 1.

But there is a bug that can cause attackers to bypass restrictions and access php-cgi directly.

Comment 1 errata-xmlrpc 2024-12-11 11:44:24 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:10952 https://access.redhat.com/errata/RHSA-2024:10952

Comment 2 errata-xmlrpc 2024-12-11 11:44:48 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:10950 https://access.redhat.com/errata/RHSA-2024:10950

Comment 3 errata-xmlrpc 2024-12-11 11:45:06 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:10949 https://access.redhat.com/errata/RHSA-2024:10949

Comment 4 errata-xmlrpc 2024-12-11 11:45:27 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:10951 https://access.redhat.com/errata/RHSA-2024:10951

Comment 5 errata-xmlrpc 2025-05-13 10:35:39 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:7315 https://access.redhat.com/errata/RHSA-2025:7315