#VU82940 Input validation error in Cosign - CVE-2023-46737

Vulnerability identifier: #VU82940

Vulnerability risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-46737

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cosign

Vendor: Sigstore

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. A remote attacker can perform a denial of service (DoS) attack from attacker controlled registry.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cosign: 2.0.0 rc.0 - 2.2.0

---

External links
https://github.com/sigstore/cosign/security/advisories/GHSA-vfp6-jrw2-99g9
https://github.com/sigstore/cosign/commit/8ac891ff0e29ddc67965423bee8f826219c6eb0f

---

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.