Heap-based buffer overflow in libpng (Alpine package)

1) Heap-based buffer overflow

EUVDB-ID: #VU32449

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2014-9495

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing data within the png_combine_row function in libpng before 1.5.21 and 1.6.x before 1.6.16, when running on 64-bit systems. A remote attacker can pass a specially crafted file to the affected application, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libpng (Alpine package): 1.5.10-r0 - 1.5.15-r1

CPE2.3

• cpe:2.3:a:alpine:libpng_alpine_package:1.5.10-r0:*:*:*:*:alpine_linux:*:2.3
• cpe:2.3:a:alpine:libpng_alpine_package:1.5.12-r0:*:*:*:*:alpine_linux:*:2.3
• cpe:2.3:a:alpine:libpng_alpine_package:1.5.12-r1:*:*:*:*:alpine_linux:*:2.4

External links

https://git.alpinelinux.org/aports/commit/?id=7a7c3dc1ee28d4241d5ef12fb033da839898f056
https://git.alpinelinux.org/aports/commit/?id=1e8386cb736fd14d922b00487b5d853cb3a8cd37
https://git.alpinelinux.org/aports/commit/?id=f7af94eb6c9bf83969fad2176e8adf3752060856
https://git.alpinelinux.org/aports/commit/?id=d4d31395bc2167eb3fb90dc6d51f93c7fde47230

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.