Bug 1570185 – CVE-2018-10111 gegl: unbounded memory allocation in render_rectangle function in process/gegl-processor.c

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Bug 1570185 - (CVE-2018-10111) CVE-2018-10111 gegl: unbounded memory allocation in render_rectangle function in process/gegl-processor.c

Summary:	CVE-2018-10111 gegl: unbounded memory allocation in render_rectangle function...

Status:	NEW

Aliases:	CVE-2018-10111

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity low
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Assigned To:	Red Hat Product Security
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Whiteboard:	impact=low,public=20180414,reported=2...
Keywords:	Security

Depends On:	1570186 1570189 1609099 1609100 1570187
Blocks:	1570194
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Reported:	2018-04-20 16:27 EDT by Laura Pardo
Modified:	2018-08-24 12:09 EDT (History)
CC List:	4 users (show)

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Description Laura Pardo 2018-04-20 16:27:41 EDT

A flaw was discovered in GEGL through 0.3.32. The render_rectangle function in process/gegl-processor.c has unbounded memory allocation, leading to a denial of service (application crash) upon allocation failure.


References:
https://github.com/xiaoqx/pocs/tree/master/gegl

Comment 1 Laura Pardo 2018-04-20 16:28:12 EDT

Created gegl tracking bugs for this issue:

Affects: fedora-all [bug 1570186]

Comment 4 Doran Moppert 2018-07-26 22:53:08 EDT

Created gegl03 tracking bugs for this issue:

Affects: fedora-all [bug 1609100]

Comment 6 Debarshi Ray 2018-08-24 12:09:12 EDT

As an upstream contributor to GEGL, and a downstream Fedora packager, I am surprised that this managed to bubble all the way up to becoming a CVE!

As far as I can make out, this was originally filed as https://bugzilla.gnome.org/show_bug.cgi?id=795249, which got migrated to https://gitlab.gnome.org/GNOME/gegl/issues/65 Note the complete lack of response from the reporter after the initial submission. Anyway, I have added a comment to the Gitlab issue that should clarify the situation a bit more.

In short, this is a known problem that's being worked on. It's not possible to fix it with a small localized fix that can be carried downstream.

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