Overview
The libpng library contains a denial-of-service vulnerability.
Description
The libpng library can be used to allow other applications to render PNG images. The libpng library contains a denial-of-service vulnerability. |
Impact
A remote, unauthenticated attacker may be able to create a denial-of-service condition. |
Solution
Upgrade |
Vendor Information
Debian GNU/Linux Affected
Notified: May 08, 2007 Updated: June 08, 2007
Status
Affected
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Addendum
See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=424729 for more details.
If you have feedback, comments, or additional information about this vulnerability, please send us email.
Gentoo Linux Affected
Notified: May 08, 2007 Updated: June 08, 2007
Status
Affected
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Addendum
See http://security.gentoo.org/glsa/glsa-200705-24.xml for more details.
If you have feedback, comments, or additional information about this vulnerability, please send us email.
Mandriva, Inc. Affected
Notified: May 08, 2007 Updated: June 08, 2007
Status
Affected
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Red Hat, Inc. Affected
Notified: May 08, 2007 Updated: May 18, 2007
Status
Affected
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Addendum
See http://rhn.redhat.com/errata/RHSA-2007-0356.html for more detais.
If you have feedback, comments, or additional information about this vulnerability, please send us email.
SUSE Linux Affected
Notified: May 08, 2007 Updated: July 13, 2007
Status
Affected
Vendor Statement
We have released fixed packages for this problem and issued a notice in http://www.novell.com/linux/security/advisories/2007_13_sr.html
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Sun Microsystems, Inc. Affected
Notified: May 08, 2007 Updated: August 22, 2007
Status
Affected
Vendor Statement
Sun can confirm that Solaris 8, 9, and 10 are affected by the issue described in CERT advisory VU#684664
Sun has published Sun Alert 102987 which includes details of the Solaris specific impact, contributing factors, workaround options and resolution information, and is available here:
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102987-1
The Sun Alert will be kept up to date regarding progress on this issue.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Ubuntu Affected
Notified: May 08, 2007 Updated: June 13, 2007
Status
Affected
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
libpng Affected
Notified: May 07, 2007 Updated: May 16, 2007
Status
Affected
Vendor Statement
A grayscale PNG image with a malformed (bad CRC) tRNS chunk will crash some libpng applications.
This vulnerability could be used to crash a browser when a user tries to view such a malformed PNG file. It is not known whether the vulnerability could be exploited otherwise.
The reason is that png_ptr->num_trans is set to 1 and then there is an error return after checking the CRC, so the trans[] array is never allocated. Since png_ptr->num_trans is nonzero, libpng tries to use the array later.
This bug was first introduced in libpng version 0.90, in 1996. All versions from libpng-0.90 through libpng-1.2.16 are vulnerable.
Here is the fix, thanks to Mats Palmgren:
--- pngrutil.c_1.2.16 2007-05-11 23:11:55.395466000 -0500
+++ pngrutil.c 2007-05-14 04:37:32.101297000 -0500
@@ -1314,7 +1314,10 @@
}
if (png_crc_finish(png_ptr, 0))
+ {
+ png_ptr->num_trans = 0;
return;
+ }
png_set_tRNS(png_ptr, info_ptr, readbuf, png_ptr->num_trans,
&(png_ptr->trans_values));
This patch can be applied to any vulnerable version of libpng.
Libpng version 1.0.25 and 1.2.17, which are being released concurrently
with this advisory, have been patched.
This vulnerability has been assigned the identifiers
CVE-2007-2445 and CERT VU#684664.
Glenn Randers-Pehrson
PNG Development Group
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Addendum
See http://www.mirrorservice.org/sites/download.sourceforge.net/pub/sourceforge/l/li/libpng/libpng-1.2.17-ADVISORY.txt for more details.
If you have feedback, comments, or additional information about this vulnerability, please send us email.
Apple Computer, Inc. Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Conectiva Inc. Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Cray Inc. Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
EMC, Inc. (formerly Data General Corporation) Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Engarde Secure Linux Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
F5 Networks, Inc. Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Fedora Project Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
FreeBSD, Inc. Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Fujitsu Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Hewlett-Packard Company Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Hitachi Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
IBM Corporation Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
IBM Corporation (zseries) Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
IBM eServer Unknown
Notified: May 08, 2007 Updated: May 23, 2007
Status
Unknown
Vendor Statement
For information related to this and other published CERT Advisories that may relate to the IBM eServer Platforms (xSeries, iSeries, pSeries, and zSeries) please go to
https://app-06.www.ibm.com/servers/resourcelink/lib03020.nsf/pages/securityalerts?OpenDocument&pathID=
In order to access this information you will require a Resource Link ID. To subscribe to Resource Link go to http://app-06.www.ibm.com/servers/resourcelink and follow the steps for registration.
All questions should be referred to servsec@us.ibm.com.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Immunix Communications, Inc. Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Ingrian Networks, Inc. Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Juniper Networks, Inc. Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Microsoft Corporation Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
MontaVista Software, Inc. Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Mozilla Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
NEC Corporation Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
NetBSD Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Nokia Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Novell, Inc. Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
OpenBSD Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Openwall GNU/*/Linux Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
QNX, Software Systems, Inc. Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Silicon Graphics, Inc. Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Slackware Linux Inc. Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Sony Corporation Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
The SCO Group Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Trustix Secure Linux Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Turbolinux Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Unisys Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
Wind River Systems, Inc. Unknown
Notified: May 08, 2007 Updated: May 08, 2007
Status
Unknown
Vendor Statement
We have not received a statement from the vendor.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.
CVSS Metrics
| Group | Score | Vector |
|---|---|---|
| Base | 0 | AV:--/AC:--/Au:--/C:--/I:--/A:-- |
| Temporal | 0 | E:ND/RL:ND/RC:ND |
| Environmental | 0 | CDP:ND/TD:ND/CR:ND/IR:ND/AR:ND |
References
Acknowledgements
Thanks to the libpng team for information that was used in this report.
This document was written by Ryan Giobbi.
Other Information
| CVE IDs: | CVE-2007-2445 |
| Severity Metric: | 3.86 |
| Date Public: | 2007-05-16 |
| Date First Published: | 2007-05-16 |
| Date Last Updated: | 2007-08-23 01:06 UTC |
| Document Revision: | 22 |