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Message-ID: <OF91B9D806.C373EFB3-ON88256E58.006A8C4A-88256E58.007737CB@symantec.com>
From: pferrie at symantec.com (Peter Ferrie)
Subject: silly little Explorer XP DoS




Background: Windows Explorer for Windows XP will automatically parse
.WMF files for validity when browsing the directory that contains them.
No need to click on anything at all.

Bug: GDI32!SetMetaFileBitsEx (which does the parsing) does not check
for records of zero length, resulting in an infinite loop when one is
encountered, and making the system very slow.

Demo: can be done in 24 bytes.  Very silly.
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