CVE-2023-47855
Published: 16 May 2024
Improper input validation in some Intel(R) TDX module software before version 1.5.05.46.698 may allow a privileged user to potentially enable escalation of privilege via local access.
From the Ubuntu Security Team
It was discovered that some Intel® Processors TDX module software did not properly validate input. A privileged local attacker could use this information to potentially further escalate their privileges on the system.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
intel-microcode Launchpad, Ubuntu, Debian |
bionic |
Released
(3.20240514.0ubuntu0.18.04.1+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
| focal |
Released
(3.20240514.0ubuntu0.20.04.1)
|
|
| jammy |
Released
(3.20240514.0ubuntu0.22.04.1)
|
|
| mantic |
Released
(3.20240514.0ubuntu0.23.10.1)
|
|
| noble |
Released
(3.20240514.0ubuntu0.24.04.1)
|
|
| trusty |
Ignored
(trusty doesn't support early microcode loading at runtime)
|
|
| upstream |
Needs triage
|
|
| xenial |
Released
(3.20240514.0ubuntu0.16.04.1+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.0 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | High |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N |
References
- https://www.cve.org/CVERecord?id=CVE-2023-47855
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-01036.html
- https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/releases/tag/microcode-20240514
- https://ubuntu.com/security/notices/USN-6797-1
- NVD
- Launchpad
- Debian