CVE-2020-26282 : Vulnerability Insights and Analysis
Learn about CVE-2020-26282, a critical vulnerability in BrowserUp Proxy allowing unauthenticated Remote Code Execution (RCE) via Java EL expressions. Find out the impact, affected systems, and mitigation steps.
BrowserUp Proxy allows manipulation of HTTP requests and responses, with a critical vulnerability allowing unauthenticated Remote Code Execution (RCE).
Understanding CVE-2020-26282
BrowserUp Proxy is susceptible to a Server-Side Template Injection vulnerability, enabling attackers to execute arbitrary Java EL expressions, leading to RCE.
What is CVE-2020-26282?
The vulnerability in BrowserUp Proxy allows attackers to inject malicious code via Java EL expressions, potentially leading to unauthorized RCE.
The Impact of CVE-2020-26282
The vulnerability has a CVSS base score of 10 (Critical) with high impacts on confidentiality and integrity, allowing attackers to execute code remotely without authentication.
Technical Details of CVE-2020-26282
BrowserUp Proxy's vulnerability details and affected systems.
Vulnerability Description
A Server-Side Template Injection in BrowserUp Proxy enables attackers to inject Java EL expressions, leading to unauthenticated RCE.
Affected Systems and Versions
- Product: browserup-proxy
- Vendor: browserup
- Versions Affected: < 2.1.2
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: None
- Scope: Changed
Mitigation and Prevention
Steps to mitigate and prevent exploitation of CVE-2020-26282.
Immediate Steps to Take
- Update BrowserUp Proxy to version 2.1.2 or newer.
- Monitor network traffic for any suspicious activities.
Long-Term Security Practices
- Regularly update software and dependencies.
- Implement network segmentation to limit the impact of potential attacks.
Patching and Updates
- Apply patches and updates promptly to address known vulnerabilities.