CVE-2024-36031 Vulnerability Analysis & Exploit Details

CVE-2024-36031
Vulnerability Scoring

9.8

/10

Critical Risk

As a catastrophic security flaw, CVE-2024-36031 has severe implications, demanding immediate intervention.

Attack Complexity Details

Attack Complexity: Low
Exploits can be performed without significant complexity or special conditions.
Attack Vector: Network
Vulnerability is exploitable over a network without physical access.
Privileges Required: None
No privileges are required for exploitation.
Scope: Unchanged
Exploit remains within the originally vulnerable component.
User Interaction: None
No user interaction is necessary for exploitation.

CVE-2024-36031 Details

Status: Analyzed

Last updated: 🕡 01 Apr 2025, 18:34 UTC
Originally published on: 🕓 30 May 2024, 16:15 UTC

Time between publication and last update: 306 days

CVSS Release: version 3

CVSS3 Source

134c704f-9b21-4f2e-91b3-4a467353bcc0

CVSS3 Type

Secondary

CVSS3 Vector

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

CVE-2024-36031 Vulnerability Summary

CVE-2024-36031: In the Linux kernel, the following vulnerability has been resolved: keys: Fix overwrite of key expiration on instantiation The expiry time of a key is unconditionally overwritten during instantiation, defaulting to turn it permanent. This causes a problem for DNS resolution as the expiration set by user-space is overwritten to TIME64_MAX, disabling further DNS updates. Fix this by restoring the condition that key_set_expiry is only called when the pre-parser sets a specific expiry.

Assessing the Risk of CVE-2024-36031

Access Complexity Graph

The exploitability of CVE-2024-36031 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-2024-36031

With low attack complexity and no required privileges, CVE-2024-36031 is an easy target for cybercriminals. Organizations should prioritize immediate mitigation measures to prevent unauthorized access and data breaches.

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-2024-36031, 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-2024-36031, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

Confidentiality: High
Exploiting CVE-2024-36031 can result in unauthorized access to sensitive data, severely compromising data privacy.
Integrity: High
CVE-2024-36031 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
Availability: High
CVE-2024-36031 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: 0.044% (probability of exploit)

EPSS Percentile: 12.92% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 87.08% of others.

CVE-2024-36031 References

External References

CWE Common Weakness Enumeration

CWE-324

Vulnerable Configurations

cpe:2.3:o:linux:linux_kernel:5.10.206:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10.206:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10.207:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10.207:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10.208:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10.208:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10.209:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10.209:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10.210:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10.210:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10.211:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10.211:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10.212:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10.212:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10.213:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.10.213:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:5.10.215:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:5.15.146:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:5.15.148:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:5.15.158:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.1.71:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.1.72:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1.73:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.1.74:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.1.76:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1.77:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1.77:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1.78:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.1.78:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.1.80:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.1.82:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.1.84:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.1.86:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.6.13:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.6.13:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.6.14:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.6.15:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.6.16:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.6.16:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.6.17:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.6.17:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.6.18:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.6.19:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.6.19:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.6.20:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.6.26:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.6.28:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.6.28:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.6.30:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.7.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7.5:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7.5:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.7.7:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7.7:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.7.9:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7.9:*:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.7.10:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7.11:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7.11:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7.12:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7.12:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.7:rc5:*:*:*:*:*:*
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cpe:2.3:o:linux:linux_kernel:6.8.9:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.9:-:*:*:*:*:*:*

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