Bug 1118929 (CVE-2014-4911)

Summary: CVE-2014-4911 PolarSSL: Denial of Service against GCM enabled servers (and clients)
Product: [Other] Security Response Reporter: Kurt Seifried <kseifried>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: carnil, mads, mstevens
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2015-09-05 18:56:35 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: 1118930, 1118931    
Bug Blocks:    

Description Kurt Seifried 2014-07-12 01:15:55 UTC 
Offspark B.V. reports:

PolarSSL Security Advisory 2014-02

Title	 Denial of Service against GCM enabled servers (and clients)
CVE	 CVE-2014-4911
Date	 11th of July 2014
Affects	 All PolarSSL versions before 1.2.11 and 1.3.8
Not affected All branches before 1.2.x and version > 1.2.10 or > 1.3.7
Impact	     Crash of server application (or clients by a malicious server)
Exploit	     Withheld
A denial of service against PolarSSL servers that offer GCM ciphersuites has been found using the fuzzing techniques of the Codenomicon Defensics toolkit. Potentially clients are affected too if a malicious server decides to execute the denial of service attack against its clients.

Impact
A server or client that is targeted with this attack can be potentially crashed with a segfault.

Workaround
Disabling of the GCM ciphersuites prevents this attack.

Patch
See External Reference

External reference:

https://polarssl.org/tech-updates/security-advisories/polarssl-security-advisory-2014-02
Comment 1 Kurt Seifried 2014-07-12 01:17:37 UTC 
Created polarssl tracking bugs for this issue:

Affects: epel-all [bug 1118931]
Comment 2 Fedora Update System 2014-07-22 03:29:23 UTC 
polarssl-1.2.11-1.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 3 Fedora Update System 2014-07-22 03:29:36 UTC 
polarssl-1.2.11-1.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 4 Fedora Update System 2014-07-30 19:35:22 UTC 
polarssl-1.3.2-2.el6 has been pushed to the Fedora EPEL 6 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 5 Fedora Update System 2014-07-30 19:35:30 UTC 
polarssl-1.3.2-2.el5 has been pushed to the Fedora EPEL 5 stable repository.  If problems still persist, please make note of it in this bug report.