CVE-2023-46737

CVSS 3.1 Score 5.3 of 10 (medium)

Details

Published Nov 7, 2023
Updated: Nov 14, 2023
CWE ID 835
CWE ID 400

Summary

CVE-2023-46737 is a denial-of-service vulnerability affecting Cosign, a sigstore signing tool for OCI containers. This issue allows an attacker controlling a registry to return a high volume of attestations and signatures to Cosign, causing it to enter an endless loop. The root cause is Cosign's unlimited fetching of attestations from remote registries. An attacker can exploit this by compromising a registry or making requests to their own registry, preventing other users from verifying their data. Organizations using Cosign are advised to upgrade to version 2.2.1 to mitigate the risk, as it introduces a limit to the number of attestations that Cosign will process.

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