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.
Metrics
Affected Vendors & Products
References
History
Fri, 06 Dec 2024 21:15:00 +0000
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First Time appeared |
Openwrt
Openwrt asu |
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CPEs | cpe:2.3:o:openwrt:asu:*:*:*:*:*:*:*:* | |
Vendors & Products |
Openwrt
Openwrt asu |
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ssvc
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Fri, 06 Dec 2024 16:30:00 +0000
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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. | |
Title | openwrt/asu allows build artifact poisoning via truncated SHA-256 hash and command injection | |
Weaknesses | CWE-328 | |
References |
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Metrics |
cvssV4_0
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2024-12-06T16:14:39.169Z
Updated: 2024-12-06T20:54:32.538Z
Reserved: 2024-11-29T18:02:16.755Z
Link: CVE-2024-54143
Vulnrichment
Updated: 2024-12-06T20:54:21.456Z
NVD
Status : Received
Published: 2024-12-06T17:15:12.687
Modified: 2024-12-06T17:15:12.687
Link: CVE-2024-54143
Redhat
No data.