#VU67666 Stack-based buffer overflow in Snakeyaml - CVE-2022-38749

Vulnerability identifier: #VU67666

Vulnerability risk: Medium

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:Green]

CVE-ID: CVE-2022-38749

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Snakeyaml

Vendor: Snakeyaml Project

Description

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

The vulnerability exists due to a boundary error when handling YAML files. A remote attacker can pass a specially crafted YAML file to the application, trigger a stack-based buffer overflow and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Snakeyaml: 1.1 - 1.30

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External links
http://bitbucket.org/snakeyaml/snakeyaml/issues/525/got-stackoverflowerror-for-many-open
http://bugs.chromium.org/p/oss-fuzz/issues/detail?id=47024

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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.