#VU61599 Input validation error in client_golang - CVE-2022-21698

Vulnerability identifier: #VU61599

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-2022-21698

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

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

Vendor: Prometheus

Description

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

The vulnerability exists due to insufficient validation of user-supplied input within method label cardinality. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

client_golang: 1.11.0

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External links
https://github.com/prometheus/client_golang/pull/962
https://github.com/prometheus/client_golang/releases/tag/v1.11.1
https://github.com/prometheus/client_golang/security/advisories/GHSA-cg3q-j54f-5p7p
https://github.com/prometheus/client_golang/pull/987

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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.