CVE-2020-14323 : Security Advisory and Response
Learn about CVE-2020-14323, a null pointer dereference flaw in Samba versions before 4.11.15, 4.12.9, and 4.13.1, allowing local users to crash the Winbind service and cause denial of service. Find mitigation steps and updates here.
A null pointer dereference flaw in Samba's Winbind service could allow a local user to crash the service, leading to denial of service.
Understanding CVE-2020-14323
What is CVE-2020-14323?
This CVE refers to a null pointer dereference vulnerability found in Samba versions before 4.11.15, 4.12.9, and 4.13.1, allowing a local user to crash the Winbind service.
The Impact of CVE-2020-14323
The vulnerability could be exploited by a local user to cause a denial of service by crashing the Winbind service.
Technical Details of CVE-2020-14323
Vulnerability Description
A null pointer dereference flaw was discovered in Samba's Winbind service in versions prior to 4.11.15, 4.12.9, and 4.13.1.
Affected Systems and Versions
- Product: Samba
- Versions affected: All versions before 4.11.15, 4.12.9, and 4.13.1
Exploitation Mechanism
The vulnerability could be exploited by a local user to crash the Winbind service, resulting in a denial of service.
Mitigation and Prevention
Immediate Steps to Take
- Apply the necessary security updates provided by Samba to patch the vulnerability.
- Monitor official sources for any additional information or updates regarding this CVE.
Long-Term Security Practices
- Regularly update and patch software to prevent known vulnerabilities.
- Implement the principle of least privilege to limit the impact of potential security breaches.
- Conduct regular security audits and assessments to identify and address vulnerabilities.
Patching and Updates
Ensure that all Samba installations are updated to versions 4.11.15, 4.12.9, or 4.13.1 to mitigate the null pointer dereference vulnerability.