CVE-2019-1597 : Vulnerability Insights and Analysis

Multiple vulnerabilities in the implementation of the Lightweight Directory Access Protocol (LDAP) feature in Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition.

Understanding CVE-2019-1597

This CVE identifies vulnerabilities in the LDAP feature of Cisco FXOS and NX-OS Software that could lead to a DoS attack.

What is CVE-2019-1597?

The vulnerabilities in the LDAP feature of Cisco FXOS and NX-OS Software allow attackers to craft LDAP packets to cause affected devices to reload, resulting in a DoS situation.

The Impact of CVE-2019-1597

Attack Complexity: Low
Attack Vector: Network
Availability Impact: High
Base Score: 8.6 (High)
Scope: Changed
No privileges required

Technical Details of CVE-2019-1597

These details provide insights into the vulnerability and affected systems.

Vulnerability Description

Vulnerabilities in LDAP implementation
Attacker can cause device reload via crafted LDAP packets

Affected Systems and Versions

Firepower 4100 Series Next-Generation Firewalls
Firepower 9300 Security Appliance
MDS 9000 Series Multilayer Switches
Nexus 3000 Series Switches
Nexus 3500 Platform Switches
Nexus 7000 and 7700 Series Switches
Nexus 9000 Series Switches in Standalone NX-OS Mode
Cisco UCS 6200 and 6300 Fabric Interconnect

Exploitation Mechanism

Attacker sends specifically crafted LDAP packets
Must come from LDAP server with device's IP address

Mitigation and Prevention

Protect systems from CVE-2019-1597 with these strategies.

Immediate Steps to Take

Apply vendor patches promptly
Monitor network traffic for suspicious LDAP packets

Long-Term Security Practices

Regularly update and patch systems
Implement network segmentation and access controls

Patching and Updates

Update affected systems to versions that address the vulnerabilities