#VU10403 Heap overwrite in GraphicsMagick - CVE-2018-6799

Vulnerability identifier: #VU10403

Vulnerability 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

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GraphicsMagick
Universal components / Libraries / Libraries used by multiple products

Vendor: GraphicsMagick Group

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
Update to versions 1.3.28.

Vulnerable software versions

GraphicsMagick: 1.3.8 - 1.3.27

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External links
https://hg.graphicsmagick.org/hg/GraphicsMagick/rev/b41e2efce6d3

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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.