CVE-2019-0074 : Exploit Details and Defense Strategies
Learn about CVE-2019-0074, a path traversal vulnerability in Juniper Networks Junos OS affecting NFX150, QFX10K, EX9200, MX, and PTX Series devices with NG-RE. Find out the impact, affected versions, and mitigation steps.
A vulnerability related to path traversal has been identified in NFX150 Series and QFX10K Series, EX9200 Series, MX Series, and PTX Series devices that have the Next-Generation Routing Engine (NG-RE). This CVE affects Juniper Networks Junos OS versions 15.1F to 18.4, excluding versions 15.1 and 16.2.
Understanding CVE-2019-0074
This CVE discloses a path traversal vulnerability in devices with NG-RE, allowing a locally authenticated user to access sensitive system files.
What is CVE-2019-0074?
The vulnerability allows unauthorized access to system files on NFX150, QFX10K, EX9200, MX, and PTX Series devices with NG-RE.
The Impact of CVE-2019-0074
- Attack Complexity: Low
- Attack Vector: Local
- Confidentiality Impact: High
- Privileges Required: Low
- CVSS Base Score: 5.5 (Medium)
Technical Details of CVE-2019-0074
This section provides specific technical details of the vulnerability.
Vulnerability Description
The vulnerability enables a local authenticated user to read sensitive system files on affected devices.
Affected Systems and Versions
- Affected Products: Junos OS
- Affected Versions: 15.1F to 18.4 (excluding 15.1 and 16.2)
- Platforms: NFX150, QFX10K, EX9200, MX, and PTX Series with NG-RE
Exploitation Mechanism
The vulnerability can be exploited by a locally authenticated user to gain unauthorized access to system files.
Mitigation and Prevention
To address CVE-2019-0074, follow these mitigation steps:
Immediate Steps to Take
- Update affected software to the patched versions.
- Regularly monitor for security advisories from Juniper Networks.
Long-Term Security Practices
- Implement the principle of least privilege for user access.
- Conduct regular security audits and vulnerability assessments.
Patching and Updates
- Apply the following software releases to resolve the issue: 15.1F6-S12, 16.1R6-S6, 16.1R7-S3, 17.1R3, 17.2R3-S1, 17.3R3-S3, 17.4R1-S6, 17.4R2-S2, 17.4R3, 18.1R2-S4, 18.1R3-S3, 18.2R2, 18.2R3, 18.2X75-D40, 18.3R1-S2, 18.3R2, 18.4R1-S1, 18.4R2, 19.1R1, and all subsequent releases.