CVE-2024-54143
CVE-2024-54143 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-328.
Key facts
- Severity: Critical (CVSS 4.0 base score 9.3)
- EPSS exploit prediction: 2% (77th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-52312
- Weakness: CWE-328
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2024-54143?
- 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.
- How severe is CVE-2024-54143?
- CVE-2024-54143 has a CVSS 4.0 base score of 9.3, rated critical severity.
- Is CVE-2024-54143 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2024-54143?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2024-54143 have an EU (EUVD) identifier?
- Yes. CVE-2024-54143 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-52312.
- When was CVE-2024-54143 published?
- CVE-2024-54143 was published on 2024-12-06 and last updated on 2026-06-17.
References
- https://github.com/openwrt/asu/commit/920c8a13d97b4d4095f0d939cf0aaae777e0f87e
- https://github.com/openwrt/asu/security/advisories/GHSA-r3gq-96h6-3v7q
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