Bug 1443897 – CVE-2017-7976 jbig2dec: Integer overflow in the jbig2_image_compose_function

Bugzilla will be upgraded to version 5.0. The upgrade date is tentatively scheduled for 2 December 2018, pending final testing and feedback.

Bug 1443897 - (CVE-2017-7976) CVE-2017-7976 jbig2dec: Integer overflow in the jbig2_image_compose_function

Summary:	CVE-2017-7976 jbig2dec: Integer overflow in the jbig2_image_compose_function

Status:	CLOSED NOTABUG

Aliases:	CVE-2017-7976

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

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=low,public=20170324,reported=2...
Keywords:	Security

Depends On:	1443898 1443899 1443933 1443934
Blocks:	1443943
	Show dependency tree / graph

Reported:	2017-04-20 04:30 EDT by Andrej Nemec
Modified:	2017-07-21 05:33 EDT (History)
CC List:	7 users (show)

See Also:
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2017-07-20 10:08:59 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Andrej Nemec 2017-04-20 04:30:15 EDT

Artifex jbig2dec allows out-of-bounds writes and reads because of an integer overflow in the jbig2_image_compose function in jbig2_image.c during operations on a crafted .jb2 file, leading to a denial of service (application crash).

Upstream bug:

https://bugs.ghostscript.com/show_bug.cgi?id=697683

Comment 1 Andrej Nemec 2017-04-20 04:30:48 EDT

Created jbig2dec tracking bugs for this issue:

Affects: epel-all [bug 1443899]
Affects: fedora-all [bug 1443898]

Comment 2 Adam Mariš 2017-04-20 05:48:00 EDT

Created ghostscript tracking bugs for this issue:

Affects: fedora-all [bug 1443934]


Created mupdf tracking bugs for this issue:

Affects: fedora-all [bug 1443933]

Comment 3 Adam Mariš 2017-04-20 06:02:10 EDT

Acknowledgments:

Name: Dai Ge (Chinese Academy of Sciences)

Comment 4 Cedric Buissart 2017-07-20 10:04:31 EDT

CVE-2017-7976 is a regression caused by the upstream commit cecf6b (fixing CVE-2016-9601), in which signed int were changed to unsigned int.

As such, RHEL 5,6 & 7 are not affected.

Note You need to log in before you can comment on or make changes to this bug.