Bug 1950855 - ImageMagick: division by zero vulnerability in XFontBrowserWidget() in MagickCore/widget.c
Summary: ImageMagick: division by zero vulnerability in XFontBrowserWidget() in Magick...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1950856 1950858
Blocks: 1945062
TreeView+ depends on / blocked
 
Reported: 2021-04-19 03:06 UTC by Dhananjay Arunesh
Modified: 2021-04-23 14:19 UTC (History)
4 users (show)

Fixed In Version:
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Last Closed: 2021-04-23 14:19:25 UTC
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Description Dhananjay Arunesh 2021-04-19 03:06:20 UTC 
A division-by-zero exception was found in ImageMagick in MagickCore/widget.c: XFontBrowserWidget(). It most likely will lead to a DoS attack affecting servers' availability, but could also cause other problems related to undefined behavior. This bug affects ImageMagick versions prior to 7.0.11-2 (included).

Reference:
https://github.com/ImageMagick/ImageMagick/issues/3335

Upstream patch:
https://github.com/ImageMagick/ImageMagick/commit/528d66d6dc6a7aff7c5fb313b3217399e5c8081a
https://github.com/ImageMagick/ImageMagick6/commit/ad492c7ed4cf1cf285a7f6e2ee5a1e7cf24e73b2
Comment 1 Dhananjay Arunesh 2021-04-19 03:06:49 UTC 
Created ImageMagick tracking bugs for this issue:

Affects: epel-8 [bug 1950858]
Affects: fedora-all [bug 1950856]
Comment 2 gkamathe 2021-04-23 14:19:02 UTC 
Statement:

Red Hat does not consider a division-by-zero in ImageMagick to be a security flaw
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