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Re: CVE request: pngcrush-1.3.35 through 1.7.88 segfault when run with "-loco" option


From: Glenn Randers-Pehrson <glennrp () gmail com>
Date: Thu, 31 Dec 2015 16:35:49 -0500

On Thu, Dec 31, 2015 at 3:33 PM, <cve-assign () mitre org> wrote:


Our understanding is that pngcrush is a command-line program, and that
the bug is largely equivalent to a scenario in which the "-loco"
functionality had not been implemented.


There are web services that compress PNG files, using pngcrush
as their compression engine.  I haven't found any that allow users
to specify the "-loco" option, though.


We probably would need a threat model in which the victim cannot
recover from the attack by simply avoiding all subsequent use of the
"-loco" option, e.g., a segfault that realistically could lead to code
execution.


OK, I'm withdrawing the request for a CVE number.

Glenn

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