Bug 2369827 (CVE-2025-48866)

Summary:	CVE-2025-48866 mod_security: ModSecurity Denial of Service Vulnerability
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	CC:	csutherl, jclere, mturk, pjindal, plodge, szappis
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A denial of service flaw was found in ModSecurity. This vulnerability is present in the `sanitiseArg`/`sanitizeArg` function can be overloaded with a large number of arguments which will lead to excessive memory usage when processing json values. This may lead to a denial of service in the affected web server should memory limits be exceeded.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2369879, 2369880
Bug Blocks:

Description OSIDB Bzimport 2025-06-02 16:01:19 UTC

ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Versions prior to 2.9.10 contain a denial of service vulnerability similar to GHSA-859r-vvv8-rm8r/CVE-2025-47947. The `sanitiseArg` (and `sanitizeArg` - this is the same action but an alias) is vulnerable to adding an excessive number of arguments, thereby leading to denial of service. Version 2.9.10 fixes the issue. As a workaround, avoid using rules that contain the  `sanitiseArg` (or `sanitizeArg`) action.

Comment 2 errata-xmlrpc 2025-08-05 04:59:25 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:12838 https://access.redhat.com/errata/RHSA-2025:12838

Comment 3 errata-xmlrpc 2025-08-12 01:10:49 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2025:13670 https://access.redhat.com/errata/RHSA-2025:13670

Comment 4 errata-xmlrpc 2025-08-12 15:28:20 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Via RHSA-2025:13716 https://access.redhat.com/errata/RHSA-2025:13716

Comment 5 errata-xmlrpc 2025-08-12 20:21:27 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2025:13775 https://access.redhat.com/errata/RHSA-2025:13775