CVE-2019-1628 : Security Advisory and Response

Cisco Integrated Management Controller Denial of Service Vulnerability

Understanding CVE-2019-1628

This CVE involves a security weakness in the web server of the Cisco Integrated Management Controller (IMC), potentially leading to a denial of service (DoS) issue on the affected device.

What is CVE-2019-1628?

The vulnerability allows a local attacker who is authenticated to trigger a buffer overflow by sending a carefully crafted HTTP request, causing a DoS situation on the device.

The Impact of CVE-2019-1628

If exploited, the vulnerability can lead to a buffer overflow, crashing the process and creating a DoS scenario on the affected device.

Technical Details of CVE-2019-1628

Vulnerability Description

The vulnerability in the web server of Cisco IMC arises from incorrect bounds checking, enabling an attacker to exploit it through a specially designed HTTP request.

Affected Systems and Versions

Product: Cisco Unified Computing System (Management Software)
Vendor: Cisco
Versions Affected: Less than 4.0(4b)

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Local
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Availability Impact: High
Confidentiality Impact: None
Integrity Impact: None
CVSS Base Score: 5.5 (Medium Severity)

Mitigation and Prevention

Immediate Steps to Take

Apply vendor-provided patches or updates promptly.
Monitor vendor channels for security advisories.
Restrict network access to the affected system.

Long-Term Security Practices

Regularly update and patch all software and firmware.
Implement strong authentication mechanisms.
Conduct regular security assessments and audits.

Patching and Updates

Cisco has released patches to address this vulnerability.
Ensure timely application of the latest updates to mitigate the risk of exploitation.