CVE-2018-10172 : Vulnerability Insights and Analysis
CVE-2018-10172 is a vulnerability in 7-Zip on Windows that allows attackers to bypass access restrictions by exploiting the SeLockMemoryPrivilege privilege within a sandboxed process. Learn about the impact, affected systems, exploitation mechanism, and mitigation steps.
On Windows, 7-Zip from version 18.01 onwards incorporates the feature of "Large memory pages" by utilizing the LsaAddAccountRights function to include the SeLockMemoryPrivilege privilege to the user's account. This implementation inadvertently enables potential attackers to evade designated access limitations by exploiting this privilege within a sandboxed process.
Understanding CVE-2018-10172
7-Zip through 18.01 on Windows implements the "Large memory pages" option by calling the LsaAddAccountRights function to add the SeLockMemoryPrivilege privilege to the user's account, making it easier for attackers to bypass intended access restrictions by using this privilege in the context of a sandboxed process.
What is CVE-2018-10172?
CVE-2018-10172 is a vulnerability in 7-Zip on Windows that allows attackers to bypass access restrictions by exploiting the SeLockMemoryPrivilege privilege within a sandboxed process.
The Impact of CVE-2018-10172
The vulnerability enables potential attackers to evade designated access limitations, posing a security risk to systems utilizing 7-Zip on Windows.
Technical Details of CVE-2018-10172
7-Zip version 18.01 on Windows is affected by this vulnerability.
Vulnerability Description
7-Zip incorporates the "Large memory pages" feature, which inadvertently allows attackers to bypass access restrictions.
Affected Systems and Versions
- Product: 7-Zip
- Vendor: N/A
- Versions: 18.01 onwards
Exploitation Mechanism
Attackers can exploit the SeLockMemoryPrivilege privilege within a sandboxed process to evade access limitations.
Mitigation and Prevention
Taking immediate steps and implementing long-term security practices are crucial to mitigate the risks associated with CVE-2018-10172.
Immediate Steps to Take
- Disable unnecessary privileges to limit the attack surface.
- Monitor and restrict the use of SeLockMemoryPrivilege.
Long-Term Security Practices
- Regularly update 7-Zip to the latest version to patch the vulnerability.
- Implement strong access controls and least privilege principles.
- Conduct regular security assessments to identify and address vulnerabilities.
- Educate users on safe computing practices.
- Utilize sandboxing and isolation techniques to contain potential threats.
Patching and Updates
Ensure timely installation of patches and updates provided by 7-Zip to address CVE-2018-10172.