CyberRota Analysis
AI-GeneratedThe kas setup tool for bitbake projects is vulnerable to manipulation when relying solely on git commit IDs for repository integrity validation, potentially allowing an attacker to introduce malicious branches. The primary risk lies in the possibility of SHA-1 hash collisions, although SHA-256 commit IDs are also affected. Users of kas prior to version 5.3, particularly those managing critical projects, should prioritize upgrading or implementing additional integrity checks to mitigate this risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
kas is a setup tool for bitbake based projects. Prior to version 5.3, when relying solely on a git commit ID (SHA-1 or SHA-256) to qualify if a checkout of a repository is equivalent to the state validated while adding its commit ID to a kas configuration, users may be tricked to check out a branch of the same name from this repository. This implies that the referenced repository has been taken over by an attacker and modified to carry such a branch. SHA-1 commits may also be replaced by creating hash collisions, so the primary impact of this issue is on SHA-256 commit IDs. Version 5.3 fixes the issue. As a workaround, avoid relying solely on the commit ID for integrity validation of a repository that might become under control of a malicious 3rd party. If available, additional validate cryptographically signed commits or tags. Alternatively, mirror the repository to a save place, validate its integrity, and use this instead of the original one.