It was found that PyWBEM, a Python library for making CIM (Common Information Model) operations over HTTP using the WBEM CIM-XML protocol, failed to verify the URI matches the Subject of the certificate. This could allow a man-in-the-middle attacker to spoof an SSL server if they had a certificate that was valid for any domain name.
Acknowledgements: This issue was discovered by Florian Weimer and Stephen Gallagher of Red Hat.
Public now via a Fedora build. Note that the fix there may not be the correct one. Refer to http://seclists.org/oss-sec/2013/q4/524 for further details.
Created attachment 851358 [details] Final fix Final fix. This patch corrects CVE-2013-6418 (bug 1039801) and CVE-2013-6444 (bug 1044246)
(In reply to Murray McAllister from comment #4) > Created attachment 851358 [details] > Final fix Can you note the source? E.g. upstream source repository commit link.
(In reply to Murray McAllister from comment #4) > Created attachment 851358 [details] > Final fix > > Final fix. This patch corrects CVE-2013-6418 (bug 1039801) and CVE-2013-6444 > (bug 1044246) Upstream commit: http://sourceforge.net/p/pywbem/code/627/
> Upstream commit: > > http://sourceforge.net/p/pywbem/code/627/ This one is also needed: http://sourceforge.net/p/pywbem/code/622/
Created pywbem tracking bugs for this issue: Affects: epel-5 [bug 1065357]
Statement: Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.