Buffer overflow in libpng (Alpine package)

1) Buffer overflow

EUVDB-ID: #VU18304

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-14048

CWE-ID: CWE-119 - Memory corruption

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 images within the png_free_data() function in png.c. A remote attacker can create a specially crafted image, pass it to the affected application, trigger memory corruption 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): 1.6.29-r1 - 1.6.35-r0

External links

http://git.alpinelinux.org/aports/commit/?id=1f88f47a7730e0cff88e91f728d9ce6f9632bace
http://git.alpinelinux.org/aports/commit/?id=64ccf246bf0c9f29e14017895a65cd46f68c36af
http://git.alpinelinux.org/aports/commit/?id=aca534846f09aee2bd3cbccdbbeb49277730af57
http://git.alpinelinux.org/aports/commit/?id=c6ea56540262710775618c19e90adbe0e1177be3

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.