Vulnerability identifier: #VU76605

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-2251

CWE-ID: CWE-248

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
yaml
Other software / Other software solutions

Vendor:

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

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External links
http://github.com/eemeli/yaml/commit/984f5781ffd807e58cad3b5c8da1f940dab75fba
http://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.