Local Privilege Escalation Vulnerability in Linux Package - DEBIAN-CVE-2023-21264
Summary
DEBIAN-CVE-2023-21264: In multiple functions of mem_protect.c, there is a possible way to access hypervisor memory due to a memory access check in the wrong place. Affects linux versions < 6.3.7-1. Fixed in 6.3.7-1. How to fix ↓
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Background
The Linux package is a core component of the Debian operating system, providing essential functionalities for managing system resources and hardware interactions. It is widely used in various environments, from servers to personal computers. This vulnerability arises from a flaw in the memory protection mechanisms, which could potentially allow unauthorized access to hypervisor memory.
Vulnerability Detail
In multiple functions of mem_protect.c, there is a possible way to access hypervisor memory due to a memory access check being implemented in the wrong place. This flaw could lead to local escalation of privileges, allowing an attacker with system execution privileges to gain unauthorized access. User interaction is not required for exploitation, making it a significant security concern.
How To Fix
Minimum fixed version
6.3.7-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linuxTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. It is advisable to apply the patch as soon as it becomes available.
Conclusion
The DEBIAN-CVE-2023-21264 vulnerability in the Linux package poses a serious risk of local privilege escalation due to improper memory access checks. It is essential for users to update their systems to the patched version to protect against potential exploitation.
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FAQ
It is a vulnerability in the Linux package that allows local privilege escalation due to improper memory access checks.
You can use tools like Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected.
If exploited, this vulnerability could allow an attacker to gain unauthorized access to hypervisor memory, leading to escalated privileges and potential system compromise.
No, user interaction is not needed for the exploitation of this vulnerability.
While there are no specific workarounds, it is crucial to monitor for updates and apply the patch as soon as possible to mitigate risks.
References
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