Vulnerability identifier: #VU41992

Vulnerability 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-2014-0333

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libpng
Universal components / Libraries / Libraries used by multiple products

Vendor: libpng

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The png_push_read_chunk function in pngpread.c in the progressive decoder in libpng 1.6.x through 1.6.9 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via an IDAT chunk with a length of zero.

Mitigation
Install update from vendor's website.

Vulnerable software versions

libpng: 1.6.0 - 1.6.9

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External links
http:ftp://ftp.simplesystems.org/pub/png/src/libpng16/patch-libpng16-vu684412.diff
http://lists.opensuse.org/opensuse-updates/2014-03/msg00029.html
http://www.kb.cert.org/vuls/id/684412
http://sourceforge.net/projects/libpng/files/libpng16/patch-libpng16-vu684412.diff

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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.