CVE-2024-50142
Vulnerability Scoring
Analysis In Progress
CVE-2024-50142
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2024-50142 Details
Status: Awaiting Analysis
Last updated: 🕖 08 Nov 2024, 19:01 UTC
Originally published on: 🕙 07 Nov 2024, 10:15 UTC
Time between publication and last update: 1 days
CVSS Release:
CVE-2024-50142 Vulnerability Summary
CVE-2024-50142: In the Linux kernel, the following vulnerability has been resolved: xfrm: validate new SA's prefixlen using SA family when sel.family is unset This expands the validation introduced in commit 07bf7908950a ("xfrm: Validate address prefix lengths in the xfrm selector.") syzbot created an SA with usersa.sel.family = AF_UNSPEC usersa.sel.prefixlen_s = 128 usersa.family = AF_INET Because of the AF_UNSPEC selector, verify_newsa_info doesn't put limits on prefixlen_{s,d}. But then copy_from_user_state sets x->sel.family to usersa.family (AF_INET). Do the same conversion in verify_newsa_info before validating prefixlen_{s,d}, since that's how prefixlen is going to be used later on.
Assessing the Risk of CVE-2024-50142
Access Complexity Graph
The exploitability of CVE-2024-50142 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-2024-50142
No exploitability data is available for CVE-2024-50142.
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-2024-50142, 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-2024-50142, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2024-50142 does not compromise confidentiality.
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Integrity:
None
CVE-2024-50142 does not impact data integrity.
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Availability:
None
CVE-2024-50142 does not affect system availability.
Exploit Prediction Scoring System (EPSS)
The EPSS score estimates the probability that this vulnerability will be exploited in the near future.
EPSS Score: 0.042% (probability of exploit)
EPSS Percentile: 5.02%
(lower percentile = lower relative risk)
This vulnerability is less risky than approximately 94.98% of others.
CVE-2024-50142 References
External References
- https://git.kernel.org/stable/c/2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71
- https://git.kernel.org/stable/c/3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563
- https://git.kernel.org/stable/c/401ad99a5ae7180dd9449eac104cb755f442e7f3
- https://git.kernel.org/stable/c/7d9868180bd1e4cf37e7c5067362658971162366
- https://git.kernel.org/stable/c/8df5cd51fd70c33aa1776e5cbcd82b0a86649d73
- https://git.kernel.org/stable/c/bce1afaa212ec380bf971614f70909a27882b862
- https://git.kernel.org/stable/c/e68dd80ba498265d2266b12dc3459164f4ff0c4a
- https://git.kernel.org/stable/c/f31398570acf0f0804c644006f7bfa9067106b0a
CWE Common Weakness Enumeration
Unknown
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