CVE-2022-29220
GitHub Action - Dependabot GPG Key Verification Bypass
Description
github-action-merge-dependabot is an action that automatically approves and merges dependabot pull requests (PRs). Prior to version 3.2.0, github-action-merge-dependabot does not check if a commit created by dependabot is verified with the proper GPG key. There is just a check if the actor is set to `dependabot[bot]` to determine if the PR is a legit PR. Theoretically, an owner of a seemingly valid and legit action in the pipeline can check if the PR is created by dependabot and if their own action has enough permissions to modify the PR in the pipeline. If so, they can modify the PR by adding a second seemingly valid and legit commit to the PR, as they can set arbitrarily the username and email in for commits in git. Because the bot only checks if the actor is valid, it would pass the malicious changes through and merge the PR automatically, without getting noticed by project maintainers. It would probably not be possible to determine where the malicious commit came from, as it would only say `dependabot[bot]` and the corresponding email-address. Version 3.2.0 contains a patch for this issue.
INFO
Published Date :
May 31, 2022, 4:15 p.m.
Last Modified :
June 15, 2022, 6:49 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
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-2022-29220.
| URL | Resource |
|---|---|
| https://github.com/fastify/github-action-merge-dependabot/commit/309f39539c5d918d8a47075587aa8720a9c127f7 | Patch Third Party Advisory |
| https://github.com/fastify/github-action-merge-dependabot/security/advisories/GHSA-v5vr-h3xq-8v6w | Third Party Advisory |
| https://hackerone.com/bugs?report_id=1564530 | Permissions Required Third Party Advisory |
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-2022-29220 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-29220 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.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jun. 15, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://github.com/fastify/github-action-merge-dependabot/commit/309f39539c5d918d8a47075587aa8720a9c127f7 No Types Assigned https://github.com/fastify/github-action-merge-dependabot/commit/309f39539c5d918d8a47075587aa8720a9c127f7 Patch, Third Party Advisory Changed Reference Type https://github.com/fastify/github-action-merge-dependabot/security/advisories/GHSA-v5vr-h3xq-8v6w No Types Assigned https://github.com/fastify/github-action-merge-dependabot/security/advisories/GHSA-v5vr-h3xq-8v6w Third Party Advisory Changed Reference Type https://hackerone.com/bugs?report_id=1564530 No Types Assigned https://hackerone.com/bugs?report_id=1564530 Permissions Required, Third Party Advisory Added CWE NIST CWE-345 Added CPE Configuration OR *cpe:2.3:a:fastify:github_action_merge_dependabot:*:*:*:*:*:*:*:* versions up to (excluding) 3.2.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-29220 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-2022-29220
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.00%
score
0.23876
percentile