Vulnerability Description
openwrt/asu is an image on demand server for OpenWrt based distributions. The request hashing mechanism truncates SHA-256 hashes to only 12 characters. This significantly reduces entropy, making it feasible for an attacker to generate collisions. By exploiting this, a previously built malicious image can be served in place of a legitimate one, allowing the attacker to "poison" the artifact cache and deliver compromised images to unsuspecting users. This can be combined with other attacks, such as a command injection in Imagebuilder that allows malicious users to inject arbitrary commands into the build process, resulting in the production of malicious firmware images signed with the legitimate build key. This has been patched with 920c8a1.
Related Weaknesses (CWE)
References
- https://github.com/openwrt/asu/commit/920c8a13d97b4d4095f0d939cf0aaae777e0f87e
- https://github.com/openwrt/asu/security/advisories/GHSA-r3gq-96h6-3v7q
FAQ
What is CVE-2024-54143?
CVE-2024-54143 is a documented vulnerability. openwrt/asu is an image on demand server for OpenWrt based distributions. The request hashing mechanism truncates SHA-256 hashes to only 12 characters. This significantly reduces entropy, making it fe...
How severe is CVE-2024-54143?
CVSS scoring is not yet available for CVE-2024-54143. Check NVD for updates.
Is there a patch for CVE-2024-54143?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.