Bug 853827 – CVE-2012-4387 struts2: Long parameter name DoS

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Bug 853827 - (CVE-2012-4387) CVE-2012-4387 struts2: Long parameter name DoS

Summary:	CVE-2012-4387 struts2: Long parameter name DoS

Status:	CLOSED NOTABUG

Aliases:	CVE-2012-4387

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20120811,repor...
Keywords:	Security

Depends On:
Blocks:
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Reported:	2012-09-03 01:11 EDT by David Jorm
Modified:	2014-10-20 20:03 EDT (History)
CC List:	3 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2012-09-03 01:16:56 EDT
Type:	---
Regression:	---
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Documentation:	---
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RHEL 7.3 requirements from Atomic Host:
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Description David Jorm 2012-09-03 01:11:01 EDT

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 1 David Jorm 2012-09-03 01:16:56 EDT

Statement:

Not Vulnerable. This issue only affects struts 2, it does not affect the
versions of struts as shipped with various Red Hat products.

Comment 2 Jan Lieskovsky 2012-09-06 08:37:18 EDT

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

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