CVE-2019-1682 : Vulnerability Insights and Analysis
Learn about CVE-2019-1682, a high-severity privilege escalation vulnerability in Cisco APIC software. Find out the impact, affected versions, and mitigation steps.
Cisco Application Policy Infrastructure Controller (APIC) software has a privilege escalation vulnerability that could allow an authenticated attacker to elevate their privileges to root on the affected device.
Understanding CVE-2019-1682
This CVE involves a vulnerability in the FUSE filesystem functionality of Cisco APIC software, enabling attackers to escalate their privileges.
What is CVE-2019-1682?
The vulnerability arises from insufficient input validation for specific command strings executed on the device's CLI, allowing attackers with write permissions to modify certain definitions in files within a readable folder.
The Impact of CVE-2019-1682
- CVSS Base Score: 7.8 (High Severity)
- Attack Vector: Local
- Attack Complexity: Low
- Privileges Required: Low
- Confidentiality, Integrity, and Availability Impact: High
- The vulnerability could lead to an attacker gaining root privileges on the affected device.
Technical Details of CVE-2019-1682
The technical aspects of the vulnerability are as follows:
Vulnerability Description
- An attacker can exploit the FUSE filesystem functionality to manipulate commands and elevate their privileges.
Affected Systems and Versions
- Affected Product: Cisco Application Policy Infrastructure Controller (APIC)
- Affected Versions: Less than 4.1(1i) (Custom version)
Exploitation Mechanism
- Attackers with write permissions can modify file definitions in a readable folder, allowing them to execute crafted commands through the FUSE driver.
Mitigation and Prevention
To address CVE-2019-1682, consider the following steps:
Immediate Steps to Take
- Apply vendor-supplied patches promptly.
- Restrict access to vulnerable systems.
- Monitor for any unauthorized access or changes.
Long-Term Security Practices
- Regularly update and patch software and systems.
- Implement the principle of least privilege to limit access rights.
Patching and Updates
- Stay informed about security advisories from Cisco.
- Implement a robust patch management process to ensure timely updates and fixes.