CVE-2020-28041 Explained : Impact and Mitigation
Learn about CVE-2020-28041, a vulnerability in NETGEAR Nighthawk R7000 devices allowing remote attackers to access TCP and UDP services on a victim's intranet. Find mitigation steps and long-term security practices here.
The SIP ALG implementation on NETGEAR Nighthawk R7000 1.0.9.64_10.2.64 devices has a vulnerability that allows remote attackers to communicate with arbitrary TCP and UDP services on a victim's intranet machine.
Understanding CVE-2020-28041
This CVE identifies a security issue in the SIP ALG implementation on specific NETGEAR Nighthawk R7000 devices, enabling attackers to interact with services on a victim's intranet.
What is CVE-2020-28041?
The vulnerability, known as NAT Slipstreaming, arises from the ALG's incorrect handling of IP packets, potentially leading to unauthorized communication with a victim's intranet.
The Impact of CVE-2020-28041
The vulnerability allows remote attackers to access TCP and UDP services on a victim's intranet when the victim visits a malicious website, exploiting the ALG's flawed packet interpretation.
Technical Details of CVE-2020-28041
The technical aspects of this CVE provide insight into the vulnerability's description, affected systems, and the exploitation mechanism.
Vulnerability Description
The flaw in the SIP ALG implementation permits attackers to bypass security measures and communicate with services on a victim's intranet.
Affected Systems and Versions
- Product: NETGEAR Nighthawk R7000
- Version: 1.0.9.64_10.2.64
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating IP packets with specific content, allowing them to establish communication with the victim's intranet.
Mitigation and Prevention
Protecting systems from CVE-2020-28041 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Disable SIP ALG on affected devices to mitigate the risk of exploitation.
- Regularly update firmware to patch known vulnerabilities.
Long-Term Security Practices
- Implement network segmentation to isolate critical devices from potential threats.
- Educate users on safe browsing practices to prevent exposure to malicious websites.
Patching and Updates
- Check for firmware updates from NETGEAR to address the SIP ALG vulnerability.