Upstream information

CVE-2024-51746 at MITRE

Description

Gitsign is a keyless Sigstore to signing tool for Git commits with your a GitHub / OIDC identity. gitsign may select the wrong Rekor entry to use during online verification when multiple entries are returned by the log. gitsign uses Rekor's search API to fetch entries that apply to a signature being verified. The parameters used for the search are the public key and the payload. The search API returns entries that match either condition rather than both. When gitsign's credential cache is used, there can be multiple entries that use the same ephemeral keypair / signing certificate. As gitsign assumes both conditions are matched by Rekor, there is no additional validation that the entry's hash matches the payload being verified, meaning that the wrong entry can be used to successfully pass verification. Impact is minimal as while gitsign does not match the payload against the entry, it does ensure that the certificate matches. This would need to be exploited during the certificate validity window (10 minutes) by the key holder.

SUSE information

Overall state of this security issue: Resolved

This issue is currently not rated by SUSE as it is not affecting the SUSE Enterprise products.

CVSS v4 Scores
  CNA (GitHub)
Base Score 1.8
Vector CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Local
Attack Complexity High
Attack Requirements Present
Privileges Required None
User Interaction Active
Vulnerable System Confidentiality Impact None
Vulnerable System Integrity Impact Low
Vulnerable System Availability Impact None
Subsequent System Confidentiality Impact None
Subsequent System Integrity Impact None
Subsequent System Availability Impact None
CVSSv4 Version 4.0
SUSE Bugzilla entry: 1232903 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
openSUSE Tumbleweed
  • govulncheck-vulndb >= 0.0.20241106T172143-1.1
 Patchnames:
openSUSE-Tumbleweed-2024-14470

List of packages in QA

Product(s) Package(s)
SUSE Linux Enterprise Module for Package Hub 15 SP5
  • govulncheck-vulndb >= 0.0.20241108T172500-150000.1.15.1
SUSE Linux Enterprise Module for Package Hub 15 SP6
  • govulncheck-vulndb >= 0.0.20241108T172500-150000.1.15.1

SUSE Timeline for this CVE

CVE page created: Tue Nov 5 22:00:35 2024
CVE page last modified: Mon Nov 11 13:07:10 2024