Intel(R) TDX module software: Insufficient Control Flow Management
CVE-2024-21801 is a high-severity insufficient control flow management vulnerability in Intel(R) TDX module software, with a CVSS 3.1 base score of 7.1 out of 10. It can be exploited with local access to the system by an unauthenticated attacker, without any action from a user. Affected Intel(R) TDX module software versions: before version 1.5.05.46.698. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.18% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Tdx Module to 1.5.05.46.698 or a later version.
- Read the advisory on intel.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Intel(R) TDX module software | Intel(R) TDX module software | before version 1.5.05.46.698 | Not stated |
| Intel | Tdx Module | before 1.5.05.46.698 | 1.5.05.46.698 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- Confidentiality
- NoneNo data is disclosed.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H. Scored by CNA (intel.com).
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 8.3 | High | CNA (intel.com) |
| CVSS 3.1 | 7.1 | High | CNA (intel.com) |
Official description
Insufficient control flow management in some Intel(R) TDX module software before version 1.5.05.46.698 may allow a privileged user to potentially enable denial of service via local access.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Insufficient Control Flow Management
The code does not sufficiently manage its control flow during execution, creating conditions in which the control flow can be modified in unexpected ways.
More Insufficient Control Flow Management vulnerabilities (CWE-691)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in Intel(R) TDX module software
- 7.8 High severity
- 8.2 High severity
Recent Insufficient Control Flow Management vulnerabilities
- 8.1 High severity
- 8.8 High severity
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