CVE-2020-3138 : Security Advisory and Response
Learn about CVE-2020-3138, a vulnerability in Cisco Enterprise NFV Infrastructure Software that allows attackers to upload malicious code. Find mitigation steps and long-term security practices here.
A vulnerability in the upgrade component of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an authenticated, local attacker to install a malicious file when upgrading.
Understanding CVE-2020-3138
This CVE involves a security flaw in Cisco Enterprise NFV Infrastructure Software (NFVIS) that could be exploited by an authenticated local attacker to upload malicious code during an upgrade process.
What is CVE-2020-3138?
The vulnerability in Cisco NFVIS allows an attacker to upload crafted code by exploiting insufficient signature validation during an upgrade process.
The Impact of CVE-2020-3138
If successfully exploited, this vulnerability could enable an attacker to upload malicious code to the affected device, potentially leading to unauthorized access or further compromise.
Technical Details of CVE-2020-3138
This section provides more technical insights into the CVE.
Vulnerability Description
The vulnerability arises from insufficient signature validation in the upgrade component of Cisco NFVIS, allowing attackers to upload malicious files during the upgrade process.
Affected Systems and Versions
- Vendor: Cisco
- Product: Cisco Enterprise NFV Infrastructure Software (NFVIS)
- Versions: Unspecified
Exploitation Mechanism
Attackers can exploit this vulnerability by providing a crafted upgrade file, taking advantage of the insufficient signature validation.
Mitigation and Prevention
Protecting systems from CVE-2020-3138 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-supplied patches or updates promptly to mitigate the vulnerability.
- Monitor for any unauthorized changes or uploads to the NFVIS system.
Long-Term Security Practices
- Implement strict file signature validation processes to prevent unauthorized uploads.
- Regularly review and update security configurations to enhance system resilience.
Patching and Updates
Regularly check for security advisories from Cisco and apply patches or updates as soon as they are available.