Bug 971436 (CVE-2013-2153)

Summary: CVE-2013-2153 xml-security-c: Signature verification bypass flaw via EntityReference nodes in Reference elements
Product: [Other] Security Response Reporter: Jan Lieskovsky <jlieskov>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: security-response-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: xml-security-c-1.7.1 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-10-20 10:38:28 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: 975304, 975305    
Bug Blocks: 971467    

Description Jan Lieskovsky 2013-06-06 13:51:54 UTC 
A security flaw was found in the way Apache Santuario-C++ (AKA xml-security-c), a C++ language implementation of W3C security standards for XML, processed certain DSIG <Reference> elements. When loading the XML file and reviewing the content of a <Reference> elements used by the signer in the Signature, the xml-security-c library was (previously) not checking if that element did not contain EntityReference nodes, which allowed an attacker to bypass the signature verification process (make the signature verification process to succeed also for arbitrary forged content).

Upstream advisory:
[1] http://santuario.apache.org/secadv.data/CVE-2013-2153.txt

Relevant patch:
[2] http://svn.apache.org/viewvc?view=revision&revision=r1493959

Acknowledgements:

Red Hat would like to thank Scott Cantor of Apache Santuario-C++ upstream for reporting of this issue. Upstream acknowledges James Forshaw of Context Information Security as the original issue reporter.
Comment 2 Jan Lieskovsky 2013-06-06 13:55:19 UTC 
This issue affects the versions of the xml-security-c package, as shipped with Fedora release of 17 and 18.

--

This issue affects the versions of the xml-security-c package, as shipped with Fedora EPEL-5 and Fedora EPEL-6.
Comment 3 Huzaifa S. Sidhpurwala 2013-06-18 04:16:31 UTC 
Public via:

http://santuario.apache.org/secadv.data/CVE-2013-2153.txt
Comment 4 Huzaifa S. Sidhpurwala 2013-06-18 04:21:52 UTC 
Created xml-security-c tracking bugs for this issue

Affects: fedora-all [bug 975304]
Affects: epel-all [bug 975305]