CVE-2019-1651 Explained : Impact and Mitigation
Learn about CVE-2019-1651, a critical vulnerability in Cisco SD-WAN Solution allowing remote attackers to execute unauthorized code. Find mitigation steps and patching details here.
A security flaw in the vContainer component of the Cisco SD-WAN Solution could allow a remote attacker to trigger a denial of service scenario and execute unauthorized code with root user privileges.
Understanding CVE-2019-1651
This CVE involves a buffer overflow vulnerability in the Cisco SD-WAN Solution, potentially leading to severe consequences.
What is CVE-2019-1651?
The vulnerability arises from inadequate boundary checks within the vContainer system, allowing an attacker with authenticated access to exploit the flaw.
The Impact of CVE-2019-1651
- Severity: Critical with a CVSS base score of 9.9
- Attack Vector: Network
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
- Privileges Required: Low
- Scope: Changed
- User Interaction: None
- Exploits: No public announcements or known malicious use reported.
Technical Details of CVE-2019-1651
The technical aspects of the vulnerability provide insights into its nature and potential risks.
Vulnerability Description
The flaw allows an attacker to send a malicious file to a vulnerable vContainer instance, leading to a buffer overflow and subsequent denial of service and unauthorized code execution.
Affected Systems and Versions
- Affected Product: Cisco SD-WAN Solution
- Vendor: Cisco
- Affected Version: Not applicable
Exploitation Mechanism
To exploit the vulnerability, an attacker needs authenticated access to transmit a malicious file to a vulnerable vContainer instance, triggering a buffer overflow.
Mitigation and Prevention
Taking immediate steps and implementing long-term security practices are crucial to mitigate the risks associated with CVE-2019-1651.
Immediate Steps to Take
- Apply vendor-provided patches and updates promptly.
- Monitor network traffic for any suspicious activities.
- Restrict access to vulnerable systems.
Long-Term Security Practices
- Regularly update and patch all software and systems.
- Conduct security assessments and penetration testing.
- Educate users on safe computing practices.
Patching and Updates
- Cisco has released security advisories addressing the vulnerability.
- Ensure all relevant patches are applied to mitigate the risk of exploitation.