CVE-2020-3224 : Exploit Details and Defense Strategies
Learn about CVE-2020-3224, a high-severity vulnerability in Cisco IOS XE Software 16.11.1, allowing remote attackers to inject commands via the web UI, potentially leading to configuration changes or denial of service.
A vulnerability in the web-based user interface (web UI) of Cisco IOS XE Software could allow an authenticated, remote attacker to inject IOS commands to an affected device, potentially leading to configuration alteration or denial of service.
Understanding CVE-2020-3224
This CVE involves a command injection vulnerability in Cisco IOS XE Software, impacting version 16.11.1.
What is CVE-2020-3224?
The vulnerability allows a remote attacker with read-only privileges to inject IOS commands via crafted HTTP requests to the web UI, exploiting insufficient input validation.
The Impact of CVE-2020-3224
- CVSS Base Score: 8.8 (High Severity)
- Attack Vector: Network
- Confidentiality, Integrity, and Availability Impact: High
- Privileges Required: Low
- Successful exploitation could lead to unauthorized configuration changes or a denial of service.
Technical Details of CVE-2020-3224
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
The vulnerability arises from inadequate input validation of specific HTTP requests in the web UI of Cisco IOS XE Software.
Affected Systems and Versions
- Affected Product: Cisco IOS XE Software 16.11.1
- Vendor: Cisco
- Affected Version: n/a
Exploitation Mechanism
An attacker can exploit this vulnerability by sending malicious HTTP requests to a specific web UI endpoint on the affected device.
Mitigation and Prevention
Protecting systems from CVE-2020-3224 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Monitor network traffic for any suspicious activity.
- Restrict access to the web UI to authorized personnel only.
Long-Term Security Practices
- Regularly update and patch all software and firmware.
- Conduct security training for employees to recognize and report potential threats.
Patching and Updates
Ensure that the affected Cisco IOS XE Software version is updated with the latest patches to mitigate the vulnerability.