sigstore cosign up to 2.2.3 Artifact allocation of resources

Summaryinfo

A vulnerability was found in sigstore cosign up to 2.2.3 and classified as problematic. This vulnerability affects unknown code of the component Artifact Handler. Executing a manipulation can lead to allocation of resources. This vulnerability is tracked as CVE-2024-29903. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in sigstore cosign up to 2.2.3. This vulnerability affects an unknown code of the component Artifact Handler. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect availability. CVE summarizes:

Cosign provides code signing and transparency for containers and binaries. Prior to version 2.2.4, maliciously-crafted software artifacts can cause denial of service of the machine running Cosign thereby impacting all services on the machine. The root cause is that Cosign creates slices based on the number of signatures, manifests or attestations in untrusted artifacts. As such, the untrusted artifact can control the amount of memory that Cosign allocates. The exact issue is Cosign allocates excessive memory on the lines that creates a slice of the same length as the manifests. Version 2.2.4 contains a patch for the vulnerability.

The advisory is available at github.com. This vulnerability was named CVE-2024-29903 since 03/21/2024. The exploitation appears to be difficult. The attack can be initiated remotely. Additional levels of successful authentication are required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 2.2.4 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 629f5f8fa672973503edde75f84dcd984637629e is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• sigstore

Name

• cosign

Version

• 2.2.0
• 2.2.1
• 2.2.2
• 2.2.3

License

• open-source

Website

• Product: https://github.com/sigstore/cosign/

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CPE 2.2info

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