Bug 1599943 – CVE-2018-13785 libpng: Integer overflow and resultant divide-by-zero in pngrutil.c:png_check_chunk_length() allows for denial of service

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Bug 1599943 - (CVE-2018-13785) CVE-2018-13785 libpng: Integer overflow and resultant divide-by-zero in pngrutil.c:png_check_chunk_length() allows for denial of service

Summary:	CVE-2018-13785 libpng: Integer overflow and resultant divide-by-zero in pngru...

Status:	NEW

Aliases:	CVE-2018-13785

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
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URL:
Whiteboard:	impact=low,public=20180405,reported=2...
Keywords:	Security

Depends On:	1599948 1599949 1599944 1599945 1599946 1599947 1599950 1599951 1599952
Blocks:	1599953
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Reported:	2018-07-10 21:31 EDT by Sam Fowler
Modified:	2018-10-24 18:07 EDT (History)
CC List:	18 users (show)

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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2018:3000	None	None	None	2018-10-24 18:05 EDT
Red Hat Product Errata	RHSA-2018:3001	None	None	None	2018-10-24 18:06 EDT
Red Hat Product Errata	RHSA-2018:3002	None	None	None	2018-10-24 18:06 EDT
Red Hat Product Errata	RHSA-2018:3003	None	None	None	2018-10-24 18:07 EDT
Red Hat Product Errata	RHSA-2018:3007	None	None	None	2018-10-24 17:38 EDT
Red Hat Product Errata	RHSA-2018:3008	None	None	None	2018-10-24 17:40 EDT

Groups: None (edit)

Description Sam Fowler 2018-07-10 21:31:49 EDT

libpng through version 1.6.34 is vulnerable to an integer overflow and resultant divide-by-zero in the pngrutil.c:png_check_chunk_length() function. An attacker could exploit this to cause a denial of service via crafted PNG file.


Upstream Bug:

https://sourceforge.net/p/libpng/bugs/278/


Upstream Patch:

https://github.com/glennrp/libpng/commit/8a05766cb74af05c04c53e6c9d60c13fc4d59bf2

Comment 1 Sam Fowler 2018-07-10 21:33:10 EDT

Created libpng tracking bugs for this issue:

Affects: fedora-all [bug 1599944]


Created libpng10 tracking bugs for this issue:

Affects: epel-6 [bug 1599950]
Affects: fedora-all [bug 1599945]


Created libpng12 tracking bugs for this issue:

Affects: fedora-all [bug 1599946]


Created libpng15 tracking bugs for this issue:

Affects: fedora-all [bug 1599947]


Created mingw-libpng tracking bugs for this issue:

Affects: epel-7 [bug 1599949]
Affects: fedora-all [bug 1599948]

Comment 2 Sam Fowler 2018-07-10 21:33:36 EDT

The affected code was moved into pngrutil.c:png_check_chunk_length() in the below commit:

https://github.com/glennrp/libpng/commit/2dca15686fadb1b8951cb29b02bad4cae73448da

Comment 6 Scott Gayou 2018-07-16 17:07:01 EDT

This does not appear to be reproducible on RHEL 7. The target calculation in png_check_chunk_length is not in the RHEL7 version.

Comment 7 errata-xmlrpc 2018-10-24 17:38:44 EDT

This issue has been addressed in the following products:

  Oracle Java for Red Hat Enterprise Linux 7

Via RHSA-2018:3007 https://access.redhat.com/errata/RHSA-2018:3007

Comment 8 errata-xmlrpc 2018-10-24 17:40:03 EDT

This issue has been addressed in the following products:

  Oracle Java for Red Hat Enterprise Linux 6

Via RHSA-2018:3008 https://access.redhat.com/errata/RHSA-2018:3008

Comment 9 errata-xmlrpc 2018-10-24 18:05:30 EDT

This issue has been addressed in the following products:

  Oracle Java for Red Hat Enterprise Linux 6

Via RHSA-2018:3000 https://access.redhat.com/errata/RHSA-2018:3000

Comment 10 errata-xmlrpc 2018-10-24 18:06:05 EDT

This issue has been addressed in the following products:

  Oracle Java for Red Hat Enterprise Linux 7

Via RHSA-2018:3001 https://access.redhat.com/errata/RHSA-2018:3001

Comment 11 errata-xmlrpc 2018-10-24 18:06:35 EDT

This issue has been addressed in the following products:

  Oracle Java for Red Hat Enterprise Linux 7

Via RHSA-2018:3002 https://access.redhat.com/errata/RHSA-2018:3002

Comment 12 errata-xmlrpc 2018-10-24 18:07:21 EDT

This issue has been addressed in the following products:

  Oracle Java for Red Hat Enterprise Linux 6

Via RHSA-2018:3003 https://access.redhat.com/errata/RHSA-2018:3003

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