CVE-2019-1903 : Security Advisory and Response
Learn about CVE-2019-1903, a vulnerability in Cisco Security Manager allowing unauthorized access to sensitive data or triggering a DoS attack. Find mitigation steps and patch details here.
Cisco Security Manager XML Entity Expansion Vulnerability
Understanding CVE-2019-1903
This CVE involves a vulnerability in Cisco Security Manager that could allow unauthorized access to sensitive data or trigger a denial of service (DoS) attack.
What is CVE-2019-1903?
The vulnerability in Cisco Security Manager is caused by inadequate limitations on XML entities, enabling a remote attacker to exploit the flaw by sending harmful requests containing references within XML entities.
The Impact of CVE-2019-1903
Successful exploitation could lead to unauthorized retrieval of files from the local system, exposing sensitive information, or causing the application to exhaust resources, resulting in a DoS scenario.
Technical Details of CVE-2019-1903
Vulnerability Description
- Vulnerability Type: CWE-611
- Root Cause: Inadequate limitations on XML entities
Affected Systems and Versions
- Product: Cisco Security Manager
- Vendor: Cisco
- Affected Version: < 4.14(0.131)
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: None
- User Interaction: None
- CVSS Score: 6.5 (Medium Severity)
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly
- Monitor network traffic for any suspicious activity
- Implement firewall rules to restrict access
Long-Term Security Practices
- Regularly update and patch software and systems
- Conduct security assessments and audits periodically
- Educate users on safe browsing and email practices
Patching and Updates
- Refer to Cisco's security advisory for specific patch details and instructions