Input validation error in libpng

1) Input validation error

EUVDB-ID: #VU32577

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2013-6954

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows remote attackers to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (NULL pointer dereference and application crash) via (1) a PLTE chunk of zero bytes or (2) a NULL palette, related to pngrtran.c and pngset.c.

Mitigation

Update to version 1.6.8.

Vulnerable software versions

libpng: 1.6.0 - 1.6.7

External links

http://advisories.mageia.org/MGASA-2014-0075.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127947.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-February/127952.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128098.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128099.html
http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128114.html
http://lists.opensuse.org/opensuse-updates/2014-01/msg00071.html
http://marc.info/?l=bugtraq&m=140852886808946&w=2
http://marc.info/?l=bugtraq&m=140852974709252&w=2
http://secunia.com/advisories/58974
http://secunia.com/advisories/59058
http://security.gentoo.org/glsa/glsa-201406-32.xml
http://sourceforge.net/p/libpng/code/ci/1faa6ff32c648acfe3cf30a58d31d7aebc24968c
http://sourceforge.net/projects/libpng/files/libpng16/1.6.8/
http://www.kb.cert.org/vuls/id/650142
http://www.libpng.org/pub/png/libpng.html
http://www.mandriva.com/security/advisories?name=MDVSA-2014:035
http://www.oracle.com/technetwork/topics/security/cpuapr2014-1972952.html
http://www.securityfocus.com/bid/64493
http://www-01.ibm.com/support/docview.wss?uid=swg21672080
http://www-01.ibm.com/support/docview.wss?uid=swg21676746
http://access.redhat.com/errata/RHSA-2014:0413
http://access.redhat.com/errata/RHSA-2014:0414
http://bugzilla.redhat.com/show_bug.cgi?id=1045561
http://www.ibm.com/support/docview.wss?uid=swg21675973

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.