CVE-2019-9729 : Exploit Details and Defense Strategies

Shanda MapleStory Online V160 contains a vulnerability in the SdoKeyCrypt.sys driver, potentially leading to privilege escalation to NT AUTHORITY\SYSTEM due to input value validation issues.

Understanding CVE-2019-9729

This CVE entry highlights a vulnerability in the SdoKeyCrypt.sys driver of Shanda MapleStory Online V160, which could allow an attacker to escalate privileges to NT AUTHORITY\SYSTEM.

What is CVE-2019-9729?

The vulnerability in the SdoKeyCrypt.sys driver of Shanda MapleStory Online V160 arises from the lack of input value validation for IOCtl 0x8000c01c. This oversight results in an integer signedness error and a heap-based buffer underflow.

The Impact of CVE-2019-9729

The vulnerability could be exploited by an attacker to elevate privileges to NT AUTHORITY\SYSTEM, potentially leading to unauthorized access and control over the affected system.

Technical Details of CVE-2019-9729

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability in the SdoKeyCrypt.sys driver allows for privilege escalation to NT AUTHORITY\SYSTEM due to the absence of input value validation for IOCtl 0x8000c01c, resulting in an integer signedness error and a heap-based buffer underflow.

Affected Systems and Versions

Product: Shanda MapleStory Online V160
Vendor: N/A
Version: N/A

Exploitation Mechanism

The vulnerability can be exploited by malicious actors to manipulate the IOCtl 0x8000c01c input value, triggering an integer signedness error and a heap-based buffer underflow, ultimately leading to privilege escalation.

Mitigation and Prevention

Protecting systems from CVE-2019-9729 requires immediate actions and long-term security practices.

Immediate Steps to Take

Implement security patches or updates provided by the vendor promptly.
Monitor system logs for any suspicious activities indicating exploitation attempts.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and address vulnerabilities proactively.
Educate users and administrators on secure coding practices and the importance of validating input values.

Patching and Updates

Stay informed about security advisories and updates from the vendor to apply patches promptly and mitigate the risk of exploitation.