Improper Verification of Cryptographic Signature in Cosign - CVE-2022-36056

Vulnerability identifier: #VU67910

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2022-36056

CWE-ID: CWE-347

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to improper verification of signature when processing artifacts. A remote attacker can supply a specially crafted artifact and bypass the implemented blob verification process.

Cosign
Red Hat Advanced Cluster Security for Kubernetes
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
SUSE Linux Enterprise Desktop
SUSE Linux Enterprise Server for SAP Applications
SUSE Linux Enterprise Server
SUSE Linux Enterprise Module for Basesystem
SUSE Linux Enterprise High Performance Computing
openSUSE Leap
cosign

Install updates from vendor's website.

Cosign - update to 1.12.0
Red Hat Advanced Cluster Security for Kubernetes - update to 3.73
cosign - update to 1.12.0-150400.3.6.1

• https://github.com/sigstore/cosign/commit/80b79ed8b4d28ccbce3d279fd273606b5cddcc25
• https://github.com/sigstore/cosign/security/advisories/GHSA-8gw7-4j42-w388

• Security restrictions bypass in Cosign
• SUSE update for cosign
• Multiple vulnerabilitie sin Red Hat Advanced Cluster Security (RHACS)