CVE-2018-7250 : What You Need to Know
Learn about CVE-2018-7250, a security flaw in secdrv.sys affecting Microsoft Windows Vista, 7, 8, 8.1, and Macrovision SafeDisc, allowing unauthorized access to kernel PagedPool data.
A problem was found in secdrv.sys, which is included in Microsoft Windows Vista, Windows 7, Windows 8, and Windows 8.1 prior to KB3086255, as well as in Macrovision SafeDisc. By exploiting an uninitialized kernel pool allocation in IOCTL 0xCA002813, a local attacker without privileged access can expose 16 bits of uninitialized data from the kernel PagedPool.
Understanding CVE-2018-7250
This CVE-2018-7250 vulnerability affects secdrv.sys in various Windows versions and Macrovision SafeDisc.
What is CVE-2018-7250?
CVE-2018-7250 is a security flaw in secdrv.sys in Microsoft Windows Vista, Windows 7, Windows 8, and Windows 8.1, allowing a local attacker to leak kernel PagedPool data.
The Impact of CVE-2018-7250
The vulnerability enables a local unprivileged attacker to access 16 bits of uninitialized kernel PagedPool data, potentially leading to information exposure.
Technical Details of CVE-2018-7250
This section provides detailed technical insights into the CVE-2018-7250 vulnerability.
Vulnerability Description
An uninitialized kernel pool allocation in IOCTL 0xCA002813 in secdrv.sys allows local unprivileged attackers to leak kernel PagedPool data.
Affected Systems and Versions
- Microsoft Windows Vista
- Windows 7
- Windows 8
- Windows 8.1 (pre-KB3086255)
- Macrovision SafeDisc
Exploitation Mechanism
The vulnerability is exploited by leveraging the uninitialized kernel pool allocation in IOCTL 0xCA002813, enabling unauthorized access to kernel PagedPool data.
Mitigation and Prevention
Protect your systems from CVE-2018-7250 with the following measures:
Immediate Steps to Take
- Apply security patches and updates promptly.
- Monitor and restrict access to IOCTL 0xCA002813.
Long-Term Security Practices
- Implement the principle of least privilege to limit unauthorized access.
- Regularly audit and monitor kernel pool allocations for anomalies.
Patching and Updates
- Install the KB3086255 update for affected Windows versions.
- Consider disabling or removing Macrovision SafeDisc to mitigate the vulnerability.