Denial of service in YAML

1) Resource exhaustion

EUVDB-ID: #VU72314

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-2022-3064

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources when parsing large YAML documents. A remote attacker can consume excessive amounts of CPU or memory and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

yaml: 2.0.0 - 2.2.3

CPE2.3

• cpe:2.3:a:the_yaml_project:yaml:2.0.0:*:*:*:*:golang:*:*
• cpe:2.3:a:the_yaml_project:yaml:2.1.0:*:*:*:*:golang:*:*
• cpe:2.3:a:the_yaml_project:yaml:2.1.1:*:*:*:*:golang:*:*

External links

https://github.com/go-yaml/yaml/releases/tag/v2.2.4
https://pkg.go.dev/vuln/GO-2022-0956
https://github.com/go-yaml/yaml/commit/f221b8435cfb71e54062f6c6e99e9ade30b124d5
https://github.com/advisories/GHSA-6q6q-88xp-6f2r

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.