CVE-2020-3238 : Security Advisory and Response
Learn about CVE-2020-3238, a vulnerability in Cisco IOx Application Framework allowing remote attackers to modify files. Find mitigation steps and impact details.
A vulnerability in the Cisco Application Framework component of the Cisco IOx application environment could allow an authenticated, remote attacker to write or modify arbitrary files in the virtual instance that is running on the affected device.
Understanding CVE-2020-3238
This CVE involves a security flaw in the Cisco IOx Application Framework that could be exploited by an attacker to manipulate files within the virtual instance.
What is CVE-2020-3238?
The vulnerability arises from inadequate validation of user-supplied application packages within Cisco IOx, enabling an attacker to upload a malicious package and alter files.
The Impact of CVE-2020-3238
- The vulnerability could lead to unauthorized modification of files within the virtual instance of the affected device.
- Successful exploitation is confined to the virtual instance and does not impact the hosting device.
Technical Details of CVE-2020-3238
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability allows an authenticated remote attacker to write or modify files within the virtual instance of the affected device due to insufficient input validation of user-supplied application packages.
Affected Systems and Versions
- Product: Cisco IOx
- Vendor: Cisco
- Version: n/a
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: Low
- User Interaction: None
- Scope: Unchanged
- Confidentiality Impact: None
- Integrity Impact: High
- Availability Impact: High
Mitigation and Prevention
Steps to address and prevent the CVE-2020-3238 vulnerability.
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Monitor for any unauthorized file modifications within the virtual instance.
Long-Term Security Practices
- Implement strict file upload validation mechanisms.
- Conduct regular security assessments and audits of the Cisco IOx environment.
Patching and Updates
- Regularly check for security advisories from Cisco.
- Keep the Cisco IOx environment up to date with the latest patches and fixes.