Learn about CVE-2020-3139, a vulnerability in Cisco APIC allowing remote attackers to bypass IP table rules. Find mitigation steps and affected versions here.
A vulnerability in the out of band (OOB) management interface IP table rule programming for Cisco Application Policy Infrastructure Controller (APIC) could allow an unauthenticated, remote attacker to bypass configured deny entries for specific IP ports.
Understanding CVE-2020-3139
This CVE involves a security vulnerability in Cisco APIC that could enable an attacker to bypass IP table rules.
What is CVE-2020-3139?
The vulnerability in Cisco APIC allows an unauthenticated remote attacker to bypass configured deny entries for specific IP ports, potentially permitting unauthorized access to the out-of-band management interface.
The Impact of CVE-2020-3139
Technical Details of CVE-2020-3139
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability is a result of a programming logic error in the configuration of specific IP table entries, allowing an attacker to send traffic to the OOB management interface and bypass configured IP table rules.
Affected Systems and Versions
Exploitation Mechanism
Mitigation and Prevention
Protecting systems from this vulnerability requires immediate actions and long-term security practices.
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates