Bug 853827 (CVE-2012-4387)

Summary:	CVE-2012-4387 struts2: Long parameter name DoS
Product:	[Other] Security Response	Reporter:	David Jorm <djorm>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	chazlett, jlieskov, mjc, pcheung
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-09-03 05:16:56 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description David Jorm 2012-09-03 05:11:01 UTC

Apache Struts2 treats HTTP request parameters as OGNL expressions. A remote attacker could exploit this by providing extremely long parameter names, which would take a long time to evaluate as OGNL expressions, leading to denial of service by CPU exhaustion. Struts 2.0.0 to Struts 2.3.4 is affected by this flaw. It is resolved in Struts 2.3.4.1 by limiting parameter name length to 100 characters by default. This setting can be configured using the "paramNameMaxLength" parameter in the ParametersInteceptor configuration.

Upstream advisory:
http://struts.apache.org/2.x/docs/s2-011.html

Comment 2 Jan Lieskovsky 2012-09-06 12:37:18 UTC

References:
https://issues.apache.org/jira/browse/WW-3860
http://www.securityfocus.com/bid/55346
http://secunia.com/advisories/50420
http://xforce.iss.net/xforce/xfdb/78183

Comment 3 Chess Hazlett 2019-09-17 20:36:54 UTC

Statement:

A previous statement by Red Hat related to this CVE, prior to August 2019, said that Apache Struts 2 is not included in any Red Hat products. This earlier statement was incorrect. While Struts 2 is not actively compiled, shipped, used, or enabled in any Red Hat provided final products, and does not cause any vulnerability in the product, struts2-core jars have been included in some products' source code packages. The inclusion was part of an import of the Google Guice repository, which includes struts2-core. Customers that build artefacts from our source code could be at risk. Red Hat will remove these artefacts from source code in future releases.

The products that included the Struts 2 artefacts in their source jars:
Fuse Service Works 6.0.0
Single Sign On 7.3.0+

If you have used the source package from one of these products to build artefacts on your system, you should do the following to remove potentially affected jars:
1. Run 'find . -name struts2*.jar' under the source location
2. Remove any files found
This will not affect the product, as the jar is included with the source of google-guice, but no functionality requiring struts2 is implemented.