CVE-2024-21853 Vulnerability Analysis & Exploit Details

CVE-2024-21853
Vulnerability Scoring

4.7
/10
Medium Risk

The vulnerability CVE-2024-21853 could compromise system integrity but typically requires user interaction to be exploited.

Attack Complexity Details

  • Attack Complexity: High
    Exploits require significant effort and special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2024-21853 Details

Status: Awaiting Analysis

Last updated: 🕑 15 Nov 2024, 14:00 UTC
Originally published on: 🕘 13 Nov 2024, 21:15 UTC

Time between publication and last update: 1 days

CVSS Release: version 3

CVSS3 Source

secure@intel.com

CVSS3 Type

Secondary

CVSS3 Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CVE-2024-21853 Vulnerability Summary

CVE-2024-21853: 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.

Assessing the Risk of CVE-2024-21853

Access Complexity Graph

The exploitability of CVE-2024-21853 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2024-21853

This vulnerability, CVE-2024-21853, requires a high level of attack complexity and low privileges, making it difficult but not impossible to exploit. Organizations should ensure robust security configurations to mitigate risks.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2024-21853, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2024-21853, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2024-21853 has no significant impact on data confidentiality.
  • Integrity: None
    CVE-2024-21853 poses no threat to data integrity.
  • Availability: High
    CVE-2024-21853 can disrupt system operations, potentially causing complete denial of service (DoS).

Exploit Prediction Scoring System (EPSS)

The EPSS score estimates the probability that this vulnerability will be exploited in the near future.

EPSS Score: 0.043% (probability of exploit)

EPSS Percentile: 11.87% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 88.13% of others.

CVE-2024-21853 References

External References

CWE Common Weakness Enumeration

CWE-1245

CAPEC Common Attack Pattern Enumeration and Classification

  • Manipulating State CAPEC-74 The adversary modifies state information maintained by the target software or causes a state transition in hardware. If successful, the target will use this tainted state and execute in an unintended manner. State management is an important function within a software application. User state maintained by the application can include usernames, payment information, browsing history as well as application-specific contents such as items in a shopping cart. Manipulating user state can be employed by an adversary to elevate privilege, conduct fraudulent transactions or otherwise modify the flow of the application to derive certain benefits. If there is a hardware logic error in a finite state machine, the adversary can use this to put the system in an undefined state which could cause a denial of service or exposure of secure data.

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