CVE-2020-28373 : Security Advisory and Response
Learn about CVE-2020-28373, a critical stack-based buffer overflow vulnerability in upnpd on specific NETGEAR devices, allowing remote attackers to execute arbitrary code. Find mitigation steps and preventive measures.
A stack-based buffer overflow vulnerability in upnpd on certain NETGEAR devices allows remote attackers to execute arbitrary code.
Understanding CVE-2020-28373
What is CVE-2020-28373?
This CVE identifies a critical vulnerability in upnpd on specific NETGEAR devices that enables remote attackers within the LAN to execute arbitrary code through a stack-based buffer overflow.
The Impact of CVE-2020-28373
The vulnerability poses a severe threat as it allows attackers to gain unauthorized access and potentially take control of affected devices, compromising data security and privacy.
Technical Details of CVE-2020-28373
Vulnerability Description
The vulnerability in upnpd on NETGEAR devices results from a stack-based buffer overflow, which can be exploited by remote attackers to execute malicious code.
Affected Systems and Versions
The following NETGEAR devices are impacted by this vulnerability:
- R6400v2 V1.0.4.102_10.0.75
- R6400 V1.0.1.62_1.0.41
- R7000P V1.3.2.126_10.1.66
- XR300 V1.0.3.50_10.3.36
- R8000 V1.0.4.62
- R8300 V1.0.2.136
- R8500 V1.0.2.136
- R7300DST V1.0.0.74
- R7850 V1.0.5.64
- R7900 V1.0.4.30
- RAX20 V1.0.2.64
- RAX80 V1.0.3.102
- R6250 V1.0.4.44
Exploitation Mechanism
Attackers can exploit this vulnerability by sending specially crafted requests to the affected upnpd service, triggering the buffer overflow and potentially executing arbitrary code.
Mitigation and Prevention
Immediate Steps to Take
- Disable Universal Plug and Play (UPnP) services on the affected NETGEAR devices to mitigate the risk of exploitation.
- Implement network segmentation to restrict access to vulnerable devices.
- Regularly monitor network traffic for any suspicious activities.
Long-Term Security Practices
- Keep devices up to date with the latest firmware releases from NETGEAR.
- Conduct regular security assessments and penetration testing to identify and address vulnerabilities proactively.
Patching and Updates
Apply security patches provided by NETGEAR promptly to address the vulnerability and enhance the security of the affected devices.