EVE's Debug Functions Unlockable Without Triggering Measured Boot
### Impact On boot, Pillar checks for /config/GlobalConfig/global.json and overrides system configuration if present. This allows enabling debug functions like SSH (debug.enable.ssh), USB keyboard (debug.enable.usb), and VNC access (app.allow.vnc) without triggering the measured boot. Thus, a user with physical access can take out the disk and modify the content of this file in the /config partition and then re-insert the disk. ### Patches Fixed in 10.1.0 and 9.4.3-lts ### Workarounds None
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2023-43633US | high8.8 | — | ||
On boot, the Pillar eve container checks for the existence and content of
“/config/GlobalConfig/global.json”.
If the file exists, it overrides the existing configuration on the d… | ||||
references
External citations — patches, advisories, analysis.
- https://asrg.io/security-advisories/cve-2023-43633WEB
- https://asrg.io/security-advisories/debug-functions-unlockable-without-triggering-measured-bootWEB
- https://github.com/lf-edge/evePACKAGE
- https://github.com/lf-edge/eve/commit/5fef4d92e75838cc78010edaed5247dfbdae1889WEB
- https://github.com/lf-edge/eve/commit/aa3501d6c57206ced222c33aea15a9169d629141WEB
- https://github.com/lf-edge/eve/security/advisories/GHSA-4c4v-42hc-72p6WEB
- https://nvd.nist.gov/vuln/detail/CVE-2023-43633ADVISORY
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