CVE-2022-36056 Vulnerabilities with blob verification in sigstore cosign

Cosign is a project under the sigstore organization which aims to make signatures invisible infrastructure. In versions prior to 1.12.0 a number of vulnerabilities have been found in cosign verify-blob, where Cosign would successfully verify an artifact when verification should have failed. First...

CVE-2022-36056

Cosign is a project under the sigstore organization which aims to make signatures invisible infrastructure. In versions prior to 1.12.0 a number of vulnerabilities have been found in cosign verify-blob, where Cosign would successfully verify an artifact when verification should have failed. First...

GHSA-CCXC-VR6P-4858 Improper Certificate Validation in Cosign

Impact Cosign can be manipulated to claim that an entry for a signature exists in the Rekor transparency log even if it doesn't. This requires the attacker to have pull and push permissions for the signature in OCI. This can happen with both standard signing with a keypair and "keyless signing"...

Design/Logic Flaw

Cosign provides container signing, verification, and storage in an OCI registry for the sigstore project. Prior to version 1.5.2, Cosign can be manipulated to claim that an entry for a signature exists in the Rekor transparency log even if it doesn't. This requires the attacker to have pull and...

CVE-2022-23649

Cosign provides container signing, verification, and storage in an OCI registry for the sigstore project. Prior to version 1.5.2, Cosign can be manipulated to claim that an entry for a signature exists in the Rekor transparency log even if it doesn't. This requires the attacker to have pull and...

Misissued certificates

Security Misissued certificates Share October 29th, 2015 Recently, Google found a google.com pre-certificate in a CT log, without having ordered one. This lead to a series of incidents, also involving Opera and its security team. The backstory Google promptly contacted Symantec who had issued the...

Venafi to Launch Certificate Transparency Log

Three weeks after the first non-Google public log for Certificate Transparency was launched by DigiCert, officials at Venafi said that the company plans to debut its own public CT log. On Jan. 1 Google approved the use of DigiCert’s log, the first CT log that is independent and not operated by...