CVE-2020-3357 : Vulnerability Insights and Analysis
Learn about CVE-2020-3357, a critical vulnerability in Cisco Small Business RV Series Router Firmware allowing remote code execution and denial of service. Take immediate steps to patch and secure your systems.
A vulnerability in the Secure Sockets Layer (SSL) VPN feature of Cisco Small Business RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers could allow remote attackers to execute arbitrary code or cause denial of service.
Understanding CVE-2020-3357
This CVE involves a critical vulnerability in Cisco Small Business RV Series Router Firmware.
What is CVE-2020-3357?
The vulnerability allows unauthenticated remote attackers to execute arbitrary code or trigger a denial of service by sending crafted HTTP requests over an SSL connection.
The Impact of CVE-2020-3357
- Attackers can execute arbitrary code on affected devices or cause them to reload, leading to a denial of service condition.
Technical Details of CVE-2020-3357
This section provides detailed technical information about the vulnerability.
Vulnerability Description
- The flaw exists due to improper validation of HTTP requests in the SSL VPN feature.
Affected Systems and Versions
- Product: Cisco Small Business RV Series Router Firmware
- Vendor: Cisco
- Affected Versions: n/a
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: None
- User Interaction: None
- CVSS Base Score: 9.8 (Critical)
- Impact: High confidentiality, integrity, and availability
Mitigation and Prevention
Protect your systems from CVE-2020-3357 with these steps:
Immediate Steps to Take
- Apply vendor-provided patches immediately.
- Monitor network traffic for any signs of exploitation.
Long-Term Security Practices
- Regularly update and patch all network devices.
- Implement strong network segmentation and access controls.
Patching and Updates
- Stay informed about security advisories from Cisco.