Windows Bluetooth Driver EoP Vulnerability (CVE-2023-21739)
CVE-2023-21739 Published on January 10, 2023
Windows Bluetooth Driver Elevation of Privilege Vulnerability
Windows Bluetooth Driver Elevation of Privilege Vulnerability
Weakness Type
Sensitive Data Storage in Improperly Locked Memory
The application stores sensitive data in memory that is not locked, or that has been incorrectly locked, which might cause the memory to be written to swap files on disk by the virtual memory manager. This can make the data more accessible to external actors. On Windows systems the VirtualLock function can lock a page of memory to ensure that it will remain present in memory and not be swapped to disk. However, on older versions of Windows, such as 95, 98, or Me, the VirtualLock() function is only a stub and provides no protection. On POSIX systems the mlock() call ensures that a page will stay resident in memory but does not guarantee that the page will not appear in the swap. Therefore, it is unsuitable for use as a protection mechanism for sensitive data. Some platforms, in particular Linux, do make the guarantee that the page will not be swapped, but this is non-standard and is not portable. Calls to mlock() also require supervisor privilege. Return values for both of these calls must be checked to ensure that the lock operation was actually successful.
Products Associated with CVE-2023-21739
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Affected Versions
Microsoft Windows 10 Version 1809:- Version 10.0.17763.0 and below 10.0.17763.3887 is affected.
- Version 10.0.0 and below 10.0.17763.3887 is affected.
- Version 10.0.0 and below 10.0.19042.2486 is affected.
- Version 10.0.0 and below 10.0.22000.1455 is affected.
- Version 10.0.19043.0 and below 10.0.19044.2486 is affected.
- Version 10.0.22621.0 and below 10.0.22621.1105 is affected.
- Version 10.0.19045.0 and below 10.0.19045.2486 is affected.
- Version 10.0.10240.0 and below 10.0.10240.19685 is affected.
- Version 10.0.14393.0 and below 10.0.14393.5648 is affected.
- Version 6.3.0 and below 6.3.9600.20778 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.