Heap overwrite in graphicsmagick (Alpine package)

1) Heap overwrite

EUVDB-ID: #VU10403

Risk: Low

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

CVE-ID: CVE-2018-6799

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the AcquireCacheNexus function in the magick/pixel_cache.c source code due to heap overwrite. A remote attacker can submit a specially crafted image file, trigger memory corruption and cause the service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

graphicsmagick (Alpine package): 1.3.21-r0 - 1.3.30-r0

CPE2.3

• cpe:2.3:o:alpine:graphicsmagick_alpine_package:1.3.21-r0:*:*:*:*:alpine_linux:*:3.2
• cpe:2.3:o:alpine:graphicsmagick_alpine_package:1.3.23-r0:*:*:*:*:alpine_linux:*:3.3
• cpe:2.3:o:alpine:graphicsmagick_alpine_package:1.3.25-r0:*:*:*:*:alpine_linux:*:3.5

External links

https://git.alpinelinux.org/aports/commit/?id=f2ad329cc3291f5c66a6c324a27a44cfe0c42c5e

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.