Intel(R) AMT: Improper Authentication
CVE-2022-29893 is a high-severity improper authentication vulnerability in Intel(R) AMT, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. There is no confirmed exploitation so far. EPSS estimates a 0.77% chance of exploitation within 30 days, higher than 56% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Active Management Technology Firmware to 11.8.93 or 11.12.93 or 11.22.93 or 12.0.92, whichever matches your release line, 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) AMT | Intel(R) AMT | Not specified in the record | Not stated |
| Intel | Active Management Technology Firmware | before 11.8.93; 11.12.0 up to, but not including, 11.12.93; 11.22.0 up to, but not including, 11.22.93; 12.0 up to, but not including, 12.0.92; 14.1 up to, but not including, 14.1.67; 15.0 up to, but not including, 15.0.42; 16.1.0 up to, but not including, 16.1.25 | 11.8.93, 11.12.93, 11.22.93, 12.0.92, 14.1.67, 15.0.42 |
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
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.1 | High | CNA (intel.com) |
| CVSS 3.1 | 8.8 | High | NVD |
Official description
Improper authentication in firmware for Intel(R) AMT before versions 11.8.93, 11.22.93, 11.12.93, 12.0.92, 14.1.67, 15.0.42, 16.1.25 may allow an authenticated user to potentially enable escalation of privilege via network access.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Authentication
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
How developers prevent this class of flaw
- Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in Intel(R) AMT
- 7.5 High severity
- 9.8 Critical severity
Recent Improper Authentication vulnerabilities
- 9.8 Critical severity
- 7.8 High severity
- 7.8 High severity
- 7.2 High severity
- 7.5 High severity
- 8.8 High severity
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