Input validation error in gd (Alpine package)

1) Input validation error

EUVDB-ID: #VU32246

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2016-6128

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The gdImageCropThreshold function in gd_crop.c in the GD Graphics Library (aka libgd) before 2.2.3, as used in PHP before 7.0.9, allows remote attackers to cause a denial of service (application crash) via an invalid color index.

Mitigation

Install update from vendor's website.

Vulnerable software versions

gd (Alpine package): 2.1.1-r1

CPE2.3

• cpe:2.3:o:alpine:gd_alpine_package:2.1.1-r1:*:*:*:*:alpine_linux:*:3.0

External links

https://git.alpinelinux.org/aports/commit/?id=262e2cf8cb01d5ffc1f8c10a3148df77981d5564
https://git.alpinelinux.org/aports/commit/?id=d1df1621cd8cdf645c22b9cc6256957208c6ff69
https://git.alpinelinux.org/aports/commit/?id=b977ac9875306ca4c7da72609ffc99410c1cb123
https://git.alpinelinux.org/aports/commit/?id=4b52b89e94d238b1bb241c3c3f7a3d546b546399

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.