CVE-2019-1961 Explained : Impact and Mitigation
Learn about CVE-2019-1961, a vulnerability in Cisco Enterprise NFV Infrastructure Software that allows remote attackers to access arbitrary files on the operating system. Find out the impact, affected systems, exploitation details, and mitigation steps.
Cisco Enterprise NFV Infrastructure Software Web Portal Arbitrary File Read Vulnerability
Understanding CVE-2019-1961
This CVE involves a vulnerability in Cisco Enterprise NFV Infrastructure Software (NFVIS) that could allow a remote authenticated attacker to access arbitrary files on the affected device's operating system.
What is CVE-2019-1961?
The vulnerability arises from inadequate input validation of tar packages uploaded via the Web Portal to the Image Repository in Cisco Enterprise NFV Infrastructure Software. An attacker could exploit this by uploading a specially crafted tar package and accessing the generated log entries to read arbitrary files on the OS.
The Impact of CVE-2019-1961
If successfully exploited, an attacker could gain access to arbitrary files on the underlying OS of the affected device, compromising confidentiality.
Technical Details of CVE-2019-1961
Vulnerability Description
The vulnerability in Cisco Enterprise NFV Infrastructure Software allows an authenticated remote attacker to read arbitrary files on the OS by manipulating tar packages uploaded through the Web Portal.
Affected Systems and Versions
- Product: Cisco Enterprise NFV Infrastructure Software
- Vendor: Cisco
- Affected Version: Unspecified
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: High
- User Interaction: None
- Confidentiality Impact: High
- Integrity Impact: None
- Availability Impact: None
- Vector String: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
- Base Score: 4.9 (Medium Severity)
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Monitor Cisco's security advisories for any new information.
Long-Term Security Practices
- Regularly review and update security configurations.
- Conduct security training for staff to recognize and report suspicious activities.
Patching and Updates
- Ensure that the latest security updates and patches are applied to the Cisco Enterprise NFV Infrastructure Software.