CVE-2023-47122
Gitsign Rekor API Key Fetching Remote Code Execution Overuthentication
Description
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.
INFO
Published Date :
Nov. 10, 2023, 10:15 p.m.
Last Modified :
Nov. 16, 2023, 5:50 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
1.6
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-47122.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-47122 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-47122 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Nov. 16, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N Changed Reference Type https://docs.sigstore.dev/about/threat-model/#sigstore-threat-model No Types Assigned https://docs.sigstore.dev/about/threat-model/#sigstore-threat-model Product Changed Reference Type https://github.com/sigstore/gitsign/commit/cd66ccb03c86a3600955f0c15f6bfeb75f697236 No Types Assigned https://github.com/sigstore/gitsign/commit/cd66ccb03c86a3600955f0c15f6bfeb75f697236 Patch Changed Reference Type https://github.com/sigstore/gitsign/pull/399 No Types Assigned https://github.com/sigstore/gitsign/pull/399 Patch Changed Reference Type https://github.com/sigstore/gitsign/security/advisories/GHSA-xvrc-2wvh-49vc No Types Assigned https://github.com/sigstore/gitsign/security/advisories/GHSA-xvrc-2wvh-49vc Patch, Vendor Advisory Added CPE Configuration OR *cpe:2.3:a:sigstore:gitsign:*:*:*:*:*:go:*:* versions from (including) 0.6.0 up to (excluding) 0.8.0 -
CVE Received by [email protected]
Nov. 10, 2023
Action Type Old Value New Value Added Description 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. Added Reference GitHub, Inc. https://github.com/sigstore/gitsign/security/advisories/GHSA-xvrc-2wvh-49vc [No types assigned] Added Reference GitHub, Inc. https://github.com/sigstore/gitsign/pull/399 [No types assigned] Added Reference GitHub, Inc. https://github.com/sigstore/gitsign/commit/cd66ccb03c86a3600955f0c15f6bfeb75f697236 [No types assigned] Added Reference GitHub, Inc. https://docs.sigstore.dev/about/threat-model/#sigstore-threat-model [No types assigned] Added CWE GitHub, Inc. CWE-347 Added CVSS V3.1 GitHub, Inc. AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:N
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-47122 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-47122
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.09 }} 0.03%
score
0.39603
percentile