Home/CVE/Gitsign is software for keyless Git signing using Sigstore. In versions of gitsign starting with 0.6.0 and prior to 0.8.
CVE

CVE-2023-47122

Gitsign is software for keyless Git signing using Sigstore. In versions of gitsign starting with 0.6.0 and prior to 0.8.

Gitsign is software for keyless Git signing using Sigstore. In versions of gitsign starting with 0.6.0 and prior to 0.8.0, Rekor public keys were fetched via the Rekor API, instead of through the local TUF client. If the upstream Rekor server happened to be compromised, gitsign clients could potentially be tricked into trusting incorrect signatures.

There is no known compromise the default public good instance (rekor.sigstore.dev) - anyone using this instance is unaffected. This issue was fixed in v0.8.0. No known workarounds are available.

MEDIUM · CVSS 4.2 EPSS 0.00099
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-347Improper Verification of Cryptographic Signature
▤

Affected Products & Versions

1
sigstore gitsign>= 0.6.0 and < 0.8.0
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go github.com/sigstore/gitsign MODERATE fixed in 0.8.0
▣

Scoring & Timeline

4.2
MEDIUM · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD10 Nov 2023 · 10:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://docs.sigstore.dev/about/threat-model/#sigstore-threat-modelProduct
https://github.com/sigstore/gitsign/commit/cd66ccb03c86a3600955f0c15f6bfeb75f697236Patch
https://github.com/sigstore/gitsign/pull/399Patch
https://github.com/sigstore/gitsign/security/advisories/GHSA-xvrc-2wvh-49vcPatchVendor Advisory
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