#VU32450 Buffer overflow in libpng - CVE-2015-0973

Vulnerability identifier: #VU32450

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2015-0973

CWE-ID: CWE-119

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 read and manipulate data.

Buffer overflow in the png_read_IDAT_data function in pngrutil.c in libpng before 1.5.21 and 1.6.x before 1.6.16 allows context-dependent attackers to execute arbitrary code via IDAT data with a large width, a different vulnerability than CVE-2014-9495.

Mitigation
Install update from vendor's website.

Vulnerable software versions

libpng: 1.5.0 - 1.5.20

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External links
https://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html
https://secunia.com/advisories/62725
https://sourceforge.net/p/png-mng/mailman/message/33173461/
https://tfpwn.com/files/libpng_heap_overflow_1.6.15.txt
https://www.openwall.com/lists/oss-security/2015/01/10/1
https://www.openwall.com/lists/oss-security/2015/01/10/3
https://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
https://support.apple.com/HT206167

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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.