CVE-2019-1678 : Security Advisory and Response
Learn about CVE-2019-1678 affecting Cisco Meeting Server. Discover the impact, affected versions, and mitigation steps to prevent a denial of service attack on conference calls.
Cisco Meeting Server has a security flaw that may enable an authorized, remote attacker to carry out a partial denial of service (DoS) against users of the Cisco Meetings application.
Understanding CVE-2019-1678
Cisco Meeting Server Denial of Service Vulnerability
What is CVE-2019-1678?
The vulnerability in Cisco Meeting Server allows an attacker to disrupt conference calls by exploiting inadequate validation of coSpaces configuration parameters.
The Impact of CVE-2019-1678
- Attack Complexity: Low
- Attack Vector: Network
- Base Score: 4.3 (Medium Severity)
- Availability Impact: Low
- Privileges Required: Low
- Scope: Unchanged
- No Confidentiality or Integrity Impact
Technical Details of CVE-2019-1678
Vulnerability Description
The flaw arises from insufficient validation of coSpaces configuration parameters, enabling attackers to disrupt conference calls.
Affected Systems and Versions
- Product: Cisco Meeting Server
- Vendor: Cisco
- Versions Affected: < 2.4.3
Exploitation Mechanism
Attackers can introduce manipulated character sequences into specific coSpace parameters to hinder clients from joining conference calls.
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor-provided patches promptly
- Monitor Cisco's security advisories for updates
- Implement network segmentation to limit the impact of potential attacks
Long-Term Security Practices
- Regularly update and patch software and systems
- Conduct security assessments and audits to identify vulnerabilities
- Educate users on safe computing practices
Patching and Updates
- Cisco has released patches to address this vulnerability
- Ensure all affected systems are updated with the latest security fixes