RCE in Embano1 Wip
CVE-2023-30623
`embano1/wip` is a GitHub Action written in Bash. Prior to version 2, the `embano1/wip` action uses the `github.event.pull_request.title` parameter in an insecure way. The title parameter is used in a run statement - resulting in a command injection vulnerability due to string interpolation. This vulnerability can be triggered by any user on GitHub. They just need to create a pull request with a commit message containing an exploit. (Note that first-time PR requests will not be run - but the attacker can submit a valid PR before submitting an invalid PR). The commit can be genuine, but the commit message can be malicious. This can be used to execute code on the GitHub runners and can be used to exfiltrate any secrets used in the CI pipeline, including repository tokens. Version 2 has a fix for this issue.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.037 (89.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.037 · newest: 0.037 · change: 0.000
Affected products
- Embano1 Wip — versions < 2
- Wip Project
Weakness classification (CWE)
References
- github.com/embano1/wip/security/advisories/GHSA-rg3q-prf8-qxmp (Vendor Advisory)
- github.com/embano1/wip/commit/c25450f77ed02c20d00b76ee3b33ff43838739a2 (Patch)
- securitylab.github.com/research/github-actions-untrusted-input/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-30623?
- CVE-2023-30623 is a high-severity vulnerability in Embano1 Wip, classified under Command Injection. CVSS score: 8.8/10. Published 2023-04-24.
- How severe is CVE-2023-30623?
- High severity. CVSS v3 base score is 8.8 out of 10.