Bug 841030 - openjpeg: segfault on broken images
openjpeg: segfault on broken images
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
unspecified Severity unspecified
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Assigned To: Red Hat Product Security
: Security
Depends On:
Blocks: 841031
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Reported: 2012-07-17 18:48 EDT by Vincent Danen
Modified: 2015-08-19 05:17 EDT (History)
7 users (show)

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Doc Type: Bug Fix
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Last Closed: 2012-07-26 23:33:24 EDT
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Description Vincent Danen 2012-07-17 18:48:43 EDT
It was reported [1],[2] that OpenJPEG suffered from a bug where, in the case of corrupt files, tiles were failing to be properly allocated, which left the code attempting to work with non-existent tiles.  Due to the lack of error checking, the code would later access the contents of the uninitialized memory and would cause a segfault.

A patch has been posted to the ghostscript git, for an embedded copy of OpenJPEG, to correct this flaw. [3]

[1] http://bugs.ghostscript.com/show_bug.cgi?id=693171
[2] http://code.google.com/p/openjpeg/issues/detail?id=159
[3] http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=29a16f87849a874cd872fc8e2beab2b3986eea51;hp=514595fc2cc84f51efdef563cf7a35a0050902e5
Comment 1 Vincent Danen 2012-07-17 18:51:29 EDT
The bug report does not indicate whether or not arbitrary code execution via a crafted PDF (in the context of upstream ghostscript, or in Poppler since we use libopenjpeg there) or jpeg file is possible.  Since I can't tell, I've filed the bug -- it could very well be nothing (a crash of the viewer linked to openjpeg), but I didn't want to rule it out before having it looked at.
Comment 12 Huzaifa S. Sidhpurwala 2012-07-26 23:33:24 EDT
Based on the reproducers and the analysis of the patches, it seems openjpeg crashes due to out-of-bounds read. There is no scope of arbitrary code execution and this can only lead to denial of service i.e. application crash.

We do not consider this as a security issue.

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