CVE-2020-5148 : Security Advisory and Response
Learn about CVE-2020-5148, a SonicWall SSO-agent default configuration vulnerability allowing attackers to capture password hashes and potentially bypass firewall access controls. Find mitigation steps here.
SonicWall SSO-agent default configuration vulnerability
Understanding CVE-2020-5148
This CVE involves a security vulnerability in SonicWall's Directory Services Connector, potentially allowing attackers to bypass firewall access controls.
What is CVE-2020-5148?
The vulnerability arises from the default configuration of SonicWall SSO-agent, which uses NetAPI for client probing. This method can enable attackers to capture password hashes and potentially authenticate as privileged users.
The Impact of CVE-2020-5148
The vulnerability could lead to unauthorized access and compromise of sensitive information, potentially allowing attackers to bypass firewall restrictions.
Technical Details of CVE-2020-5148
The technical aspects of the vulnerability are as follows:
Vulnerability Description
The SonicWall SSO-agent default configuration vulnerability allows attackers to capture password hashes and potentially authenticate as privileged users.
Affected Systems and Versions
- Product: Directory Services Connector
- Vendor: SonicWall
- Versions Affected: 4.1.17 and earlier
Exploitation Mechanism
Attackers can exploit this vulnerability by using NetAPI to probe associated IPs in the network, capturing password hashes and potentially bypassing firewall access controls.
Mitigation and Prevention
To address CVE-2020-5148, consider the following steps:
Immediate Steps to Take
- Disable NetAPI probing in SonicWall SSO-agent configuration
- Monitor network traffic for any suspicious activity
Long-Term Security Practices
- Regularly update SonicWall SSO-agent to the latest version
- Implement strong password policies and multi-factor authentication
Patching and Updates
- Apply patches and updates provided by SonicWall to fix the vulnerability