VDB-284466 · CVE-2024-21853 · intel-sa-01101

Intel Xeon/Microcode improper finite state machines in hardware logic

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.7	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic was found in Intel Xeon and Microcode. The affected element is an unknown function. The manipulation results in improper finite state machines in hardware logic. This vulnerability is identified as CVE-2024-21853. The attack is only possible with local access. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Intel Xeon and Microcode (version unknown). Affected is an unknown function. The manipulation with an unknown input leads to a improper finite state machines in hardware logic vulnerability. CWE is classifying the issue as CWE-1245. Faulty finite state machines (FSMs) in the hardware logic allow an attacker to put the system in an undefined state, to cause a denial of service (DoS) or gain privileges on the victim's system. This is going to have an impact on availability. CVE summarizes:

Improper finite state machines (FSMs) in the hardware logic in some 4th and 5th Generation Intel(R) Xeon(R) Processors may allow an authorized user to potentially enable denial of service via local access.

The advisory is available at intel.com. This vulnerability is traded as CVE-2024-21853 since 02/14/2024. The exploitability is told to be difficult. Local access is required to approach this attack. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 211478 (Fedora 41 : microcode_ctl (2024-28ea86c8aa)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (211478). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Chip Software

Vendor

Intel

Name

License

commercial

Website

Vendor: https://www.intel.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.7

VulDB Base Score: 4.7
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 4.7
CNA Vector (intel): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper finite state machines in hardware logic
CWE: CWE-1245
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 211478
Nessus Name: Fedora 41 : microcode_ctl (2024-28ea86c8aa)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/14/2024 🔍
11/13/2024 +273 days 🔍
11/13/2024 +0 days 🔍
12/21/2024 +38 days 🔍

Sourcesinfo

Vendor: intel.com

Advisory: intel-sa-01101
Status: Confirmed

CVE: CVE-2024-21853 (🔍)
GCVE (CVE): GCVE-0-2024-21853
GCVE (VulDB): GCVE-100-284466

Entryinfo

Created: 11/13/2024 23:04
Updated: 12/21/2024 17:38
Changes: 11/13/2024 23:04 (73), 11/16/2024 09:47 (2), 12/21/2024 17:38 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.