Cosign Patches Denial of Service Vulnerability Affecting All Services on Impacted Machines

CVE-2024-29903

What is CVE-2024-29903?

Cosign, a tool designed for code signing and transparency in the container ecosystem, is susceptible to a denial of service attack. Prior to version 2.2.4, specifically crafted untrusted software artifacts can manipulate Cosign's memory allocation, leading to excessive memory usage. This vulnerability arises as it creates slices proportional to the number of signatures, manifests, or attestations in the untrusted artifacts, allowing an attacker to control the memory consumption of the machine running the service. An update to version 2.2.4 addresses this issue and should be applied to mitigate potential exploitation.

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