lf-edge/eve · Security
EVE's Debug Functions Unlockable Without Triggering Measured Boot
- GHSA ID
- GHSA-4c4v-42hc-72p6
- CVE ID
- CVE-2023-43633
- Severity
- medium
- Published
- Updated
- CVSS
- 5.9 · CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N
- CVSS v3
- 5.9 · CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N
Description
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
CWEs
- CWE-522 · Insufficiently Protected Credentials
- CWE-922 · Insecure Storage of Sensitive Information
References
- https://github.com/lf-edge/eve/security/advisories/GHSA-4c4v-42hc-72p6 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2023-43633 ↗
- https://github.com/lf-edge/eve/commit/5fef4d92e75838cc78010edaed5247dfbdae1889 ↗
- https://github.com/lf-edge/eve/commit/aa3501d6c57206ced222c33aea15a9169d629141 ↗
- https://asrg.io/security-advisories/cve-2023-43633 ↗
- https://asrg.io/security-advisories/debug-functions-unlockable-without-triggering-measured-boot ↗
- https://github.com/advisories/GHSA-4c4v-42hc-72p6 ↗