CVE-2022-46179
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.33%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.33% probability · 26th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-639
- Affected
- liuos project/liuos
- Source
- security-advisories@github.com
References
- https://github.com/LiuWoodsCode/LiuOS/commit/c658b4f3e57258acf5f6207a90c2f2169698ae22Patch, Third Party Advisory
- https://github.com/LiuWoodsCode/LiuOS/security/advisories/GHSA-f9x3-mj2r-cqmfExploit, Third Party Advisory
- https://github.com/LiuWoodsCode/LiuOS/commit/c658b4f3e57258acf5f6207a90c2f2169698ae22Patch, Third Party Advisory
- https://github.com/LiuWoodsCode/LiuOS/security/advisories/GHSA-f9x3-mj2r-cqmfExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.