Microsoft Security Patches in MS13-057 Break WMV file Rendering
On July 9th, Microsoft released seven security bulletins
and thirty four KB articles containing patches.
One of those bulletins (MS13-57), which contains six KB articles with
patches, is causing problems with video playback of WMV files. Reports of a black box across half of the
frame have been seen. Specifically
referenced in reports of the problems are KB2803821 and kb2834904; however, we
suspect that all six of the patches in this security bulletin, KB2845142, KB2803821,
KB2834902, KB2834903, KB2834904, and KB2834905 have the problem.
As of this writing, Microsoft has not pulled the patch nor
have they listed any known problems with these patches.
The vulnerability fixed by these patches has a severity
rating of critical with an exploitability ranking of 2. There are no publicly known exploits at this
We recommend not installing these updates, or if they are
already installed, uninstalling the problem patches or rolling the system back
to remove problem patches.
InfoWorld Tech Watch: botched Windows patch: MS13-057/KB 2803821/KB 2834904
The Register: Botch Tuesday: Redmond frags video codec
Adobe Premiere Pro Help: WMV files corrupted on import or export
Microsoft Security Bulletin MS13-057
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