Bug 1794132 (CVE-2019-20326)

Summary:	CVE-2019-20326 gthumb: heap-based buffer overflow in _cairo_image_surface_create_from_jpeg in extensions/cairo_io/cairo-image-surface-jpeg.c
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	caillon+fedoraproject, chkr, gnome-sig, john.j5live, mclasen, rhughes, rstrode, sandmann
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	gthumb 3.8.3	Doc Type:	If docs needed, set a value
Doc Text:	A heap-based buffer overflow was found in the way gThumb rendered certain JPEG images. An attacker could use a specially crafted JPEG image to cause gThumb to crash or execute arbitrary code with the permission of the user running gThumb.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-02-20 05:29:01 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1796911, 1796910
Bug Blocks:	1794137

Description Guilherme de Almeida Suckevicz 2020-01-22 18:14:31 UTC

A heap-based buffer overflow in _cairo_image_surface_create_from_jpeg() in extensions/cairo_io/cairo-image-surface-jpeg.c in gThumb and Pix allows attackers to cause a crash and potentially execute arbitrary code via a crafted JPEG file.

References and upstream commits:
https://gitlab.gnome.org/GNOME/gthumb/commit/4faa5ce2358812d23a1147953ee76f59631590ad
https://gitlab.gnome.org/GNOME/gthumb/commit/14860321ce3235d420498c4f81f21003d1fb78f4

Comment 1 Guilherme de Almeida Suckevicz 2020-01-31 13:37:42 UTC

Created gthumb tracking bugs for this issue:

Affects: epel-7 [bug 1796911]
Affects: fedora-all [bug 1796910]

Comment 2 Huzaifa S. Sidhpurwala 2020-02-20 05:29:05 UTC

Statement:

The vulnerable code was introduced in gthumb 2.13.2. Therefore the versions of gthumb package shipped with Red Hat Enterprise Linux 5 and 6 are not affected by this flaw.