Bug 1488491 (CVE-2017-9804)

Summary:	CVE-2017-9804 struts: A regular expression Denial of Service when using URLValidator
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	aileenc, bkearney, chazlett, dbhole, felias, ggainey, gvarsami, hchiorea, jcoleman, jolee, jshepherd, kconner, ldimaggi, loleary, meissner, mmraka, nwallace, pavelp, puntogil, rwagner, spinder, taw, tcunning, theute, thomas, tkirby, tlestach, vhalbert
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	struts 2.5.13, struts 2.3.34	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-09-05 14:06:12 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 Adam Mariš 2017-09-05 14:05:26 UTC

The previous fix issued with S2-047 (CVE-2017-7672) was incomplete. If an application allows enter an URL in a form field and built-in URLValidator is used, it is possible to prepare a special URL which will be used to overload server process when performing validation of the URL.

Affected versions:

Struts 2.3.7 - Struts 2.3.33, Struts 2.5 - Struts 2.5.12

External References:

https://struts.apache.org/docs/s2-050.html

Comment 1 Chess Hazlett 2019-09-17 19:58:12 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.