Upstream information

CVE-2022-36056 at MITRE

Description

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 a cosign bundle can be crafted to successfully verify a blob even if the embedded rekorBundle does not reference the given signature. Second, when providing identity flags, the email and issuer of a certificate is not checked when verifying a Rekor bundle, and the GitHub Actions identity is never checked. Third, providing an invalid Rekor bundle without the experimental flag results in a successful verification. And fourth an invalid transparency log entry will result in immediate success for verification. Details and examples of these issues can be seen in the GHSA-8gw7-4j42-w388 advisory linked. Users are advised to upgrade to 1.12.0. There are no known workarounds for these issues.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v3 Scores
  National Vulnerability Database
Base Score 5.5
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact High
Availability Impact None
CVSSv3 Version 3.1
SUSE Bugzilla entry: 1203430 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Desktop 15 SP4
SUSE Linux Enterprise High Performance Computing 15 SP4
SUSE Linux Enterprise Module for Basesystem 15 SP4
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server for SAP Applications 15 SP4
SUSE Manager Proxy 4.3
SUSE Manager Retail Branch Server 4.3
SUSE Manager Server 4.3
  • cosign >= 1.12.0-150400.3.6.1
Patchnames:
SUSE-SLE-Module-Basesystem-15-SP4-2022-3486
openSUSE Leap 15.4
  • cosign >= 1.12.0-150400.3.6.1
Patchnames:
openSUSE-SLE-15.4-2022-3486
openSUSE Tumbleweed
  • cosign >= 1.12.0-1.1
Patchnames:
openSUSE Tumbleweed GA cosign-1.12.0-1.1


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP4 cosign Released
SUSE Linux Enterprise High Performance Computing 15 SP4 cosign Released
SUSE Linux Enterprise Module for Basesystem 15 SP4 cosign Released
SUSE Linux Enterprise Server 15 SP4 cosign Released
SUSE Linux Enterprise Server for SAP Applications 15 SP4 cosign Released
SUSE Manager Proxy 4.3 cosign Released
SUSE Manager Retail Branch Server 4.3 cosign Released
SUSE Manager Server 4.3 cosign Released
openSUSE Leap 15.4 cosign Released


SUSE Timeline for this CVE

CVE page created: Thu Sep 15 06:00:38 2022
CVE page last modified: Mon Jan 16 20:47:02 2023