CVE-2023-47122CWE-347

Gitsign's Rekor public keys fetched from upstream API instead of local TUF client.

Medium · published November 10, 2023

CVSS v3.1
4.2
EPSS
0%
Percentile
29.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.2 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00369 · 29.7th percentile
Weakness
CWE-347 · Improper Verification of Cryptographic Signature
Published
2023-11-10T21:33Z
EPSS history
Timeline
  • 10 NOV 21:33Z
    Gitsign's Rekor public keys fetched from upstream API instead of local TUF client.
    cvelistv5