Multiple vulnerabilities in Sigstore Cosign

Published: 2024-05-07

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2024-29902 CVE-2024-29903
CWE-ID	CWE-400
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Cosign Other
Vendor	Sigstore

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Resource exhaustion

EUVDB-ID: #VU89209

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-2024-29902

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources when handling attachments. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cosign: 2.0.0 - 2.2.3

CPE2.3

External links

https://github.com/sigstore/cosign/security/advisories/GHSA-88jx-383q-w4qc
https://github.com/sigstore/cosign/commit/629f5f8fa672973503edde75f84dcd984637629e
https://github.com/google/go-containerregistry/blob/a0658aa1d0cc7a7f1bcc4a3af9155335b6943f40/pkg/v1/remote/layer.go#L36-L40
https://github.com/sigstore/cosign/blob/9bc3ee309bf35d2f6e17f5d23f231a3d8bf580bc/pkg/oci/remote/remote.go#L228-L239
https://github.com/sigstore/cosign/releases/tag/v2.2.4

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.

2) Resource exhaustion

EUVDB-ID: #VU89208