Bug 1480614 (CVE-2017-7672)

Summary:	CVE-2017-7672 struts: Denial of service in built-in URLValidator
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	bkearney, csutherl, dbhole, ggainey, gzaronik, jclere, lgao, mbabacek, meissner, mmraka, myarboro, puntogil, thomas, tlestach, twalsh, weli
Target Milestone:	---	Keywords:	Reopened, Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:20:27 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:
Bug Depends On:	1480616, 1480615
Bug Blocks:

Description Pedro Sampaio 2017-08-11 13:41:29 UTC

A flaw was found in Apache Struts 2.5 through 2.5.10.1. 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.

References:

http://struts.apache.org/docs/s2-047.html
https://lists.apache.org/thread.html/3795c4dd46d9ec75f4a6eb9eca11c11edd3e796c6c1fd7b17b5dc50d@%3Cannouncements.struts.apache.org%3E

Comment 1 Pedro Sampaio 2017-08-11 13:41:44 UTC

Created struts tracking bugs for this issue:

Affects: epel-7 [bug 1480616]
Affects: fedora-all [bug 1480615]

Comment 2 gil cattaneo 2017-08-12 04:06:40 UTC

0ps ... Sorry

Comment 3 Chess Hazlett 2019-09-17 19:59:37 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.