Bug 1595819 – CVE-2018-12713 gimp: predictable temporary file name in test-xcf.c unit test

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Bug 1595819 - (CVE-2018-12713) CVE-2018-12713 gimp: predictable temporary file name in test-xcf.c unit test

Summary:	CVE-2018-12713 gimp: predictable temporary file name in test-xcf.c unit test

Status:	NEW

Aliases:	CVE-2018-12713

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=20180621,reported=2...
Keywords:	Security

Depends On:	1595820 1596112 1595821
Blocks:	1595822
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Reported:	2018-06-27 10:46 EDT by Laura Pardo
Modified:	2018-06-28 05:25 EDT (History)
CC List:	3 users (show)

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Description Laura Pardo 2018-06-27 10:46:43 EDT

A flaw was found in GIMP through 2.10.2 makes g_get_tmp_dir calls to establish temporary filenames, which may result in a filename that already exists, as demonstrated by the gimp_write_and_read_file function in app/tests/test-xcf.c. This might be leveraged by attackers to overwrite files or read file content that was intended to be private.


References:
https://gitlab.gnome.org/GNOME/gimp/issues/1689

Patch:
https://github.com/GNOME/gimp/commit/c21eff4b031acb04fb4dfce8bd5fdfecc2b6524f

Comment 1 Laura Pardo 2018-06-27 10:47:41 EDT

Created gimp tracking bugs for this issue:

Affects: fedora-all [bug 1595820]

Comment 4 Stefan Cornelius 2018-06-28 05:21:10 EDT

Statement:

This issue did affect the versions of gimp as shipped with Red Hat Enterprise Linux 7. However, as this is an issue in a unit test, it is not a problem if you are using the precompiled gimp package. This is only a problem if you recompile gimp using the src.rpm/SPEC file. Even then it's only a problem if you do not make use of isolating build tools like mock, but instead use rpmbuild directly.

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