In the Linux kernel, a vulnerability identified as CVE-2024-50302 has been resolved. This vulnerability allows attackers to potentially leak kernel memory via specially crafted HID reports due to the use of uninitialized report buffers. The vulnerability has a CVSS score of 5.5, indicating a medium severity level. It poses a risk to organizations that rely on affected versions of the Linux kernel, particularly in environments where local access may be obtainable.
Given that this vulnerability allows for high confidentiality impact, organizations using Debian Linux and related products should prioritize remediation. Immediate action is required because exploitation may lead to sensitive data exposure, impacting the overall security posture of the organization.
The vulnerability has been classified under CWE-908, indicating an uninitialized resource usage. As such, organizations are encouraged to apply the latest patches to mitigate the risks associated with this vulnerability.
Exploitation status for this vulnerability is classified as analyzed, and it is included in the Known Exploited Vulnerabilities (KEV) catalog, indicating an urgent need for remediation.
Organizations should prioritize patching immediately.
Vulnerability Details
The officially reported description for CVE-2024-50302 states: "In the Linux kernel, the following vulnerability has been resolved: HID: core: zero-initialize the report buffer. Since the report buffer is used by all kinds of drivers in various ways, let's zero-initialize it during allocation to make sure that it can't be ever used to leak kernel memory via specially-crafted report."
The vulnerability's CVSS score of 5.5 categorizes it as medium severity. This classification is significant as it highlights the potential risk to confidentiality, which is rated as high, while integrity and availability impacts remain nonexistent. The vulnerability affects various products including Android, Debian Linux, and the Linux kernel itself.
The vulnerability was published on November 19, 2024, and it is crucial for organizations to be aware of the exposure it creates, particularly in local attack vectors.
Technical Analysis
The root cause of this vulnerability stems from the lack of initialization of the report buffer in the Linux kernel, which can lead to the unintended exposure of sensitive kernel memory. The attack vector is local, meaning that an attacker would need local access to exploit this vulnerability.
The attack complexity is classified as low, further increasing the risk of exploitation. Attackers may leverage this vulnerability without any special privileges, as it requires low privileges to exploit, and there is no user interaction required. The confidentiality impact is high, while integrity and availability impacts are rated as none.
Risk & Impact Analysis
Organizations using affected versions of the Linux kernel face a significant risk from this vulnerability. The potential for attackers to leak sensitive kernel memory can lead to unauthorized access to confidential information, thereby compromising the security of systems and data.
The blast radius of this vulnerability is particularly concerning given its local exploitability and the essential role of the Linux kernel in various systems. Organizations must assess their deployment configurations to determine if they are using vulnerable versions and take appropriate action.
Given the medium severity rating and the high confidentiality impact, organizations should address this vulnerability in their priority patch cycle.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The affected versions include various releases of the Linux kernel, specifically those prior to the vendor patch. Organizations should ensure that they are running the latest versions to mitigate this vulnerability.
Mitigation & Remediation
Organizations should implement the following mitigation strategies to address CVE-2024-50302: apply the latest security patches provided by vendors, particularly those related to the Linux kernel. Regularly updating systems is essential in minimizing vulnerabilities.
For detailed guidance, organizations may refer to the continuous penetration testing resources to ensure effective vulnerability management.
Detection Guidance
Organizations should monitor logs for indicators of exploitation attempts. Detecting unusual behavior in kernel modules or driver interactions may signal exploitation attempts. Additionally, network signatures associated with HID reports should be watched closely.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2024-50302 lies in its illustration of the critical need for proper initialization of resources in kernel development. This vulnerability highlights a broader trend of resource management issues that can lead to severe security implications.
Security teams should take this as a lesson to enforce rigorous testing and validation processes in their development pipelines. Proactive measures can significantly reduce the risk of similar vulnerabilities in the future.
For further insights, organizations can explore the penetration testing methodology to enhance their security framework.
Additionally, organizations should review their incident response protocols, utilizing the findings from this vulnerability to strengthen their security posture against future threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)