#VU53290 Heap-based buffer overflow in graphviz - CVE-2020-18032

Vulnerability identifier: #VU53290

Vulnerability 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-2020-18032

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

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

Vendor: The Graphviz Project

Description

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

The vulnerability exists due to a boundary error in lib/common/shapes.c. A remote attacker can pass specially crafted data to the application, trigger heap-based buffer overflow and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

graphviz: 2.40.0 - 2.44.0

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External links
https://gitlab.com/graphviz/graphviz/-/issues/1700
https://lists.debian.org/debian-lts-announce/2021/05/msg00014.html
https://www.debian.org/security/2021/dsa-4914

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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.