#VU76605 Uncaught Exception in yaml - CVE-2023-2251

Vulnerability identifier: #VU76605

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-2023-2251

CWE-ID: CWE-248

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
yaml
Other software / Other software solutions

Vendor: eemeli

Description

The vulnerability allows a remote attacker to cause a denial of service condition.

The vulnerability exists due uncaught exception in the parseDocument() and parseAllDocuments() functions. A remote unauthenticated attacker can send a specially crafted input and cause a denial of service condition.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

yaml: before 2.0.0-5

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External links
https://github.com/eemeli/yaml/commit/984f5781ffd807e58cad3b5c8da1f940dab75fba
https://huntr.dev/bounties/4b494e99-5a3e-40d9-8678-277f3060e96c

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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.