Memory corruption in libpng

1) Buffer overflow

EUVDB-ID: #VU96993

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-3425

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to crash the application.

The vulnerability exists due to a boundary error within the png_push_read_zTXt() function in pngpread.c when processing PNG files. A remote attacker can create a specially crafted PNG file, trick the victim into opening it, trigger memory corruption and crash the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

libpng: before 1.5.10

CPE2.3

External links

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=668082
http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng;a=blob;f=CHANGES;h=284de253b1561b976291ba7405acd71ae71ff597;hb=refs/heads/libpng10
http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng;a=blob;f=CHANGES;h=2da5a7a8b690e257f94353b5b49d493cdc385322;hb=refs/heads/libpng14
http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng;a=blob;f=CHANGES;h=73e2ffd6a1471f2144d0ce7165d7323cb109f10f;hb=refs/heads/libpng15
http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng/libpng;a=blob;f=CHANGES;hb=a4b640865ae47986bbe71ecc0e7d5181dcb0bac8
http://lists.opensuse.org/opensuse-updates/2012-08/msg00004.html
http://www.openwall.com/lists/oss-security/2012/07/24/3
http://www.openwall.com/lists/oss-security/2012/07/24/5
http://www.ubuntu.com/usn/USN-2815-1

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.