CVE-2020-7699 : Exploit Details and Defense Strategies
Learn about CVE-2020-7699, a Prototype Pollution vulnerability in express-fileupload before 1.1.8, allowing denial of service or arbitrary code execution. Find mitigation steps here.
This CVE involves a vulnerability in the express-fileupload package before version 1.1.8, potentially leading to denial of service or arbitrary code execution.
Understanding CVE-2020-7699
This CVE pertains to a Prototype Pollution vulnerability in the express-fileupload package.
What is CVE-2020-7699?
CVE-2020-7699 is a security vulnerability in the express-fileupload package that exists before version 1.1.8. Enabling the parseNested option could allow attackers to trigger a denial of service or execute arbitrary code.
The Impact of CVE-2020-7699
The impact of this CVE is rated as HIGH severity with a CVSS base score of 7.5. The vulnerability can result in a denial of service or arbitrary code execution.
Technical Details of CVE-2020-7699
This section provides technical details of the CVE.
Vulnerability Description
The vulnerability in express-fileupload before 1.1.8 allows attackers to exploit the parseNested option, potentially leading to denial of service or arbitrary code execution.
Affected Systems and Versions
- Package: express-fileupload
- Versions Affected: < 1.1.8
- Vendor: Not applicable
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Availability Impact: High
- Confidentiality Impact: None
- Integrity Impact: None
Mitigation and Prevention
Protect your systems from CVE-2020-7699 with the following measures.
Immediate Steps to Take
- Update the express-fileupload package to version 1.1.8 or higher.
- Disable the parseNested option if not required.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Regularly update all software components to their latest versions.
- Implement network security measures to detect and prevent potential attacks.
- Conduct security audits and penetration testing to identify vulnerabilities.
Patching and Updates
- Stay informed about security advisories and patches related to express-fileupload.
- Apply security patches promptly to mitigate known vulnerabilities.