Auth bypass in Liuos Project
CVE-2022-46179
LiuOS is a small Python project meant to imitate the functions of a regular operating system. Version 0.1.0 and prior of LiuOS allow an attacker to set the GITHUB_ACTIONS environment variable to anything other than null or true and skip authentication checks. This issue is patched in the latest commit (c658b4f3e57258acf5f6207a90c2f2169698ae22) by requiring the var to be set to true, causing a test script to run instead of being able to login. A potential workaround is to check for the GITHUB_ACTIONS environment variable and set it to "" (no quotes) to null the variable and force credential checks.
Vulnerability class: IDOR (Insecure Direct Object Reference)
EPSS: 0.003 (25.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.2 (Critical). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H.
Affected products
- Liuos_project Liuos — versions 0.1.0
- Liuwoodscode Liuos — versions <= 0.1.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2022-46179?
- CVE-2022-46179 is a critical-severity vulnerability in Liuos Project, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 9.2/10. Published 2022-12-28.
- How severe is CVE-2022-46179?
- Critical severity. CVSS v3 base score is 9.2 out of 10.