CVE-2019-1950 : What You Need to Know
Learn about CVE-2019-1950, a critical vulnerability in Cisco IOS XE SD-WAN Software allowing unauthorized access to local attackers via default credentials. Find mitigation steps and the fixed version.
A security flaw in Cisco IOS XE SD-WAN Software allows unauthorized access to local attackers due to default credentials. This vulnerability affects versions 16.11 and earlier.
Understanding CVE-2019-1950
This CVE involves a critical vulnerability in Cisco IOS XE SD-WAN Software that could lead to unauthorized access and control of affected devices.
What is CVE-2019-1950?
The vulnerability in Cisco IOS XE SD-WAN Software enables local attackers to gain unauthorized access to devices using default credentials, potentially leading to complete control over the device.
The Impact of CVE-2019-1950
- CVSS Base Score: 8.4 (High Severity)
- Attack Vector: Local
- Confidentiality, Integrity, and Availability Impact: High
- No Privileges Required
- Scope: Unchanged
- This vulnerability poses a significant risk to affected Cisco devices running versions 16.11 and earlier.
Technical Details of CVE-2019-1950
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The flaw in Cisco IOS XE SD-WAN Software arises from default credentials in the device's configuration, allowing unauthorized access to local attackers.
Affected Systems and Versions
- Affected Product: Cisco IOS XE SD-WAN Software
- Vendor: Cisco
- Vulnerable Versions: 16.11 and earlier
Exploitation Mechanism
Attackers can exploit this vulnerability by leveraging the default credentials present in the affected device's configuration, granting them unauthorized access and control.
Mitigation and Prevention
Protecting systems from CVE-2019-1950 requires immediate action and long-term security measures.
Immediate Steps to Take
- Use the 'show running-configuration | include username admin' command to check for default credentials.
- Remove default credentials using 'config-transaction' and 'no username admin' commands.
Long-Term Security Practices
- Implement strong, unique passwords for all devices.
- Regularly update and patch software to prevent vulnerabilities.
Patching and Updates
Cisco has addressed this vulnerability in Cisco IOS XE SD-WAN Software Release 16.12.1.