Upstream information
Description
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 device on boot.
This allows an attacker to change the system's configuration, which also includes some
debug functions.
This could be used to unlock the ssh with custom "authorized_keys" via the
"debug.enable.ssh" key, similar to the "authorized_keys" finding that was noted before.
Other usages include unlocking the usb to enable the keyboard via the "debug.enable.usb"
key, allowing VNC access via the "app.allow.vnc" key, and more.
An attacker could easily enable these debug functionalities without triggering the "measured
boot" mechanism implemented by EVE OS, and without marking the device as "UUD"
("Unknown Update Detected").
This is because the "/config" partition is not protected by "measured boot", it is mutable and it
is not encrypted in any way.
An attacker can gain full control over the device without changing the PCR values, thereby not
triggering the "measured boot" mechanism, and having full access to the vault.
Note:
This issue was partially fixed in these commits (after disclosure to Zededa), where the config
partition measurement was added to PCR13:
• aa3501d6c57206ced222c33aea15a9169d629141
• 5fef4d92e75838cc78010edaed5247dfbdae1889.
This issue was made viable in version 9.0.0 when the calculation was moved to PCR14 but it was not included in the measured boot.
SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having important severity.
| CVSS detail | National Vulnerability Database |
|---|---|
| Base Score | 8.8 |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| Attack Vector | Local |
| Attack Complexity | Low |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Changed |
| Confidentiality Impact | High |
| Integrity Impact | High |
| Availability Impact | High |
| CVSSv3 Version | 3.1 |
List of released packages
| Product(s) | Fixed package version(s) | References |
|---|
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | govulncheck-vulndb | Affected |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | govulncheck-vulndb | Affected |
| openSUSE Leap 15.6 | govulncheck-vulndb | Released |
| Products past their end of life and not receiving proactive updates anymore. | ||
| openSUSE Leap 15.5 | govulncheck-vulndb | Affected |
SUSE Timeline for this CVE
CVE page created: Thu Sep 21 18:00:07 2023CVE page last modified: Fri Feb 6 22:04:41 2026