In the Linux kernel, the following vulnerability has been resolved: security/keys: fix slab-out-of-bounds in key_task_permission. This vulnerability allows an attacker with low privileges to exploit a slab-out-of-bounds read, which could lead to unauthorized access or system instability. The CVSS score of 7.1 categorizes this vulnerability as high severity, necessitating immediate attention from system administrators and security teams.
Risk to organizations includes potential unauthorized access and system instability, which could be exploited through local access. Attackers may leverage this vulnerability to read sensitive data or manipulate system operations. Organizations should prioritize patching immediately.
The vulnerability has been confirmed resolved in multiple kernel versions, and its exploitation status is currently unknown. The urgency for defenders is high, given the potential risks and the availability of a fix.
Organizations are advised to monitor their systems closely and apply the necessary updates as soon as they are available to mitigate the risks associated with this vulnerability.
Vulnerability Details
The vulnerability identified as CVE-2024-50301 exists in the Linux kernel's security/keys component, where an out-of-bounds read can occur. This issue has been characterized by KASAN reports indicating slab-out-of-bounds access in the function key_task_permission. The CVSS score is 7.1, reflecting high severity due to the local attack vector and low complexity involved.
The affected product is the Linux kernel, with details specifying versions prior to the latest patch. The vulnerability was published on November 19, 2024.
Technical Analysis
The root cause of this vulnerability stems from improper validation of keyring pointers within the search_nested_keyrings function. When iterating through slots in a node, the system fails to handle cases where a slot points to a shortcut effectively, leading to potential out-of-bounds reads. The attack vector is local, requiring low privileges and no user interaction.
The impact of this vulnerability is significant: it can lead to unauthorized access to sensitive data, compromising confidentiality, and potentially affecting system availability due to instability.
Risk & Impact Analysis
Real-world deployment of this vulnerability poses a considerable risk to organizations, particularly those using older versions of the Linux kernel. The potential for unauthorized access and subsequent data compromise underscores the importance of proactive vulnerability management.
The blast radius for this vulnerability could extend across environments where the affected kernel versions are deployed. Organizations must assess their usage of these versions and the potential impacts on their security posture.
Given the high severity and the potential for active exploitation, organizations should assess their patch management processes and prioritize the remediation of this vulnerability.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects all versions of the Linux kernel prior to the patch. Specific vulnerable versions include those from 3.13 to 6.12:rc6, excluding patched versions.
Mitigation & Remediation
Organizations should update their Linux kernel to the latest version to mitigate this vulnerability. If patching is not immediately feasible, consider implementing network segmentation and access controls to limit exposure to affected systems. Regular audits and monitoring should be established to detect any anomalies.
For further assistance, organizations can consider engaging professional penetration testing services to validate the effectiveness of their security measures.
Detection Guidance
Organizations should monitor system logs for unusual access patterns or errors related to the kernel. Behavioral anomalies around key management and user permissions should also be tracked. Implementing network signatures to detect potential exploitation attempts will further strengthen defenses.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2024-50301 highlights the necessity for robust security practices in kernel management. The trend of local privilege escalation vulnerabilities in widely-used software indicates a need for continuous security assessments.
Security teams should review their vulnerability management programs to ensure timely updates and patches. For comprehensive strategies, organizations might explore resources such as the vulnerability management program design guide to enhance their approach.
For further insights into security testing methodologies, organizations can refer to the penetration testing methodology article, which provides comprehensive strategies for effective security assessments.
Additionally, engaging in ransomware statistics research can help organizations understand the evolving threat landscape.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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