Bug 1291312 (CVE-2015-8540) - CVE-2015-8540 libpng: underflow read in png_check_keyword()
Summary: CVE-2015-8540 libpng: underflow read in png_check_keyword()
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2015-8540
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1291314 1291315 1291316 1291317 1291318 1291319 1291320
Blocks: 1291322
TreeView+ depends on / blocked
 
Reported: 2015-12-14 14:42 UTC by Martin Prpič
Modified: 2021-04-13 20:34 UTC (History)
14 users (show)

Fixed In Version: libpng 1.6.0, libpng 1.5.26, libpng 1.4.19, libpng 1.2.56, libpng 1.0.66
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-12-21 14:37:16 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2016:0099 0 normal SHIPPED_LIVE Critical: java-1.7.1-ibm security update 2016-02-02 18:52:52 UTC
Red Hat Product Errata RHSA-2016:0100 0 normal SHIPPED_LIVE Critical: java-1.7.0-ibm security update 2016-02-02 15:04:39 UTC
Red Hat Product Errata RHSA-2016:0101 0 normal SHIPPED_LIVE Critical: java-1.6.0-ibm security update 2016-02-02 15:00:49 UTC
Red Hat Product Errata RHSA-2016:1430 0 normal SHIPPED_LIVE Moderate: java-1.7.0-ibm and java-1.7.1-ibm security update 2016-07-18 17:51:35 UTC

Description Martin Prpič 2015-12-14 14:42:48 UTC 
An underflow read was found in png_check_keyword in pngwutil.c in libpng-1.2.54:

If the data of "key" is only ' ' (0x20), it will read a byte before the buffer in line 1288.

This issue impacts upstream versions 1.2.55, 1.0.65, 1.4.18, and 1.5.25 of libpng.

An attacker could possibly use this flaw to cause an out-of-bounds read by tricking an unsuspecting user into processing a specially crafted PNG image.

CVE assignment:

http://seclists.org/oss-sec/2015/q4/469

Upstream issue:

http://sourceforge.net/p/libpng/bugs/244/

Upstream patch:

http://sourceforge.net/p/libpng/code/ci/d9006f683c641793252d92254a75ae9b815b42ed/
Comment 1 Martin Prpič 2015-12-14 14:43:54 UTC 
Created libpng tracking bugs for this issue:

Affects: fedora-all [bug 1291314]
Comment 2 Martin Prpič 2015-12-14 14:44:02 UTC 
Created libpng10 tracking bugs for this issue:

Affects: epel-6 [bug 1291318]
Affects: fedora-all [bug 1291320]
Comment 3 Martin Prpič 2015-12-14 14:44:08 UTC 
Created libpng12 tracking bugs for this issue:

Affects: fedora-all [bug 1291315]
Comment 4 Martin Prpič 2015-12-14 14:44:14 UTC 
Created libpng15 tracking bugs for this issue:

Affects: fedora-all [bug 1291316]
Comment 5 Martin Prpič 2015-12-14 14:44:21 UTC 
Created mingw-libpng tracking bugs for this issue:

Affects: fedora-all [bug 1291317]
Affects: epel-7 [bug 1291319]
Comment 9 Stefan Cornelius 2015-12-21 14:41:18 UTC 
It seems like this is only an issue when an application uses a untrusted input when *writing* a PNG file. Only reading a PNG file should not be enough to trigger this. Since this is a library, it's hard to predict the exact criticality, as it depends on the application using it. For the most common scenarios, this should not be a major problem, it'll probably not even lead to a crash.
Comment 10 Fedora Update System 2015-12-28 22:56:11 UTC 
libpng10-1.0.66-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 11 Fedora Update System 2015-12-31 01:50:41 UTC 
libpng10-1.0.66-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 12 Fedora Update System 2016-01-02 22:21:23 UTC 
libpng12-1.2.56-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 13 Fedora Update System 2016-01-02 23:19:47 UTC 
libpng12-1.2.56-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 14 Fedora Update System 2016-01-03 20:25:33 UTC 
libpng10-1.0.66-1.el6 has been pushed to the Fedora EPEL 6 stable repository. If problems still persist, please make note of it in this bug report.
Comment 15 errata-xmlrpc 2016-02-02 10:05:29 UTC 
This issue has been addressed in the following products:

  Supplementary for Red Hat Enterprise Linux 6
  Supplementary for Red Hat Enterprise Linux 5

Via RHSA-2016:0101 https://rhn.redhat.com/errata/RHSA-2016-0101.html
Comment 16 errata-xmlrpc 2016-02-02 10:06:57 UTC 
This issue has been addressed in the following products:

  Supplementary for Red Hat Enterprise Linux 5

Via RHSA-2016:0100 https://rhn.redhat.com/errata/RHSA-2016-0100.html
Comment 17 errata-xmlrpc 2016-02-02 13:53:43 UTC 
This issue has been addressed in the following products:

  Supplementary for Red Hat Enterprise Linux 7
  Supplementary for Red Hat Enterprise Linux 6

Via RHSA-2016:0099 https://rhn.redhat.com/errata/RHSA-2016-0099.html
Comment 19 errata-xmlrpc 2016-07-18 13:55:55 UTC 
This issue has been addressed in the following products:

  Red Hat Satellite 5.6
  Red Hat Satellite 5.7

Via RHSA-2016:1430 https://access.redhat.com/errata/RHSA-2016:1430
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