Vulnerability · Published Nov 13, 2024 · Assigned by intel
CVE-2024-21820
High 7.2
In plain English
A high-severity incorrect default permissions in Intel(R) Xeon(R) processor memory controller configurations when using Intel(R) SGX. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.2High
Exploit odds (30 days)0.2%top 87.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Incorrect default permissions in some Intel(R) Xeon(R) processor memory controller configurations when using Intel(R) SGX may allow a privileged user to potentially enable escalation of privilege via local access.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | intel-microcode | 3.20241112.1~deb12u1 | DEBIAN-CVE-2024-21820 |
| Debian:13 | intel-microcode | 3.20241112.1 | DEBIAN-CVE-2024-21820 |
| Debian:14 | intel-microcode | 3.20241112.1 | DEBIAN-CVE-2024-21820 |
| Ubuntu:22.04:LTS | intel-microcode | 3.20241112.0ubuntu0.22.04.1 | USN-7149-1 |
| Ubuntu:22.04:LTS | intel-microcode | 3.20241112.0ubuntu0.22.04.1 | UBUNTU-CVE-2024-21820 |
| Ubuntu:24.04:LTS | intel-microcode | 3.20241112.0ubuntu0.24.04.1 | USN-7149-1 |
| Ubuntu:24.04:LTS | intel-microcode | 3.20241112.0ubuntu0.24.04.1 | UBUNTU-CVE-2024-21820 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | Intel(R) Xeon(R) processor memory controller configurations when using Intel(R) SGX | See references |
Weakness: CWE-276 · Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N