CVE-2020-26146 Explained : Impact and Mitigation
Discover the CVE-2020-26146 vulnerability affecting Samsung Galaxy S3 i9305 4.4.4 devices. Learn about the impact, affected systems, exploitation, and mitigation steps.
An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices where the WPA, WPA2, and WPA3 implementations reassemble fragments with non-consecutive packet numbers, potentially allowing an adversary to exfiltrate selected fragments.
Understanding CVE-2020-26146
This CVE identifies a vulnerability in the Wi-Fi security protocols of Samsung Galaxy S3 i9305 4.4.4 devices.
What is CVE-2020-26146?
The vulnerability allows an attacker to exploit the reassembly of fragments with non-consecutive packet numbers in WPA, WPA2, and WPA3 implementations, potentially leading to data exfiltration.
The Impact of CVE-2020-26146
The vulnerability can be exploited when another device sends fragmented frames using the WEP, CCMP, or GCMP data-confidentiality protocol. Notably, WEP is particularly vulnerable to this attack due to its design.
Technical Details of CVE-2020-26146
This section provides more technical insights into the vulnerability.
Vulnerability Description
The issue arises from the improper reassembly of fragments with non-consecutive packet numbers in the Wi-Fi security protocols.
Affected Systems and Versions
- Product: Samsung Galaxy S3 i9305 4.4.4
- Vendor: Samsung
- Versions: All versions are affected
Exploitation Mechanism
- The vulnerability is exploitable when another device sends fragmented frames using WEP, CCMP, or GCMP data-confidentiality protocols.
Mitigation and Prevention
Protecting against and addressing the CVE-2020-26146 vulnerability is crucial for maintaining security.
Immediate Steps to Take
- Disable WEP usage and switch to more secure encryption protocols like WPA2 or WPA3.
- Regularly update the device's firmware to patch known vulnerabilities.
Long-Term Security Practices
- Implement strong encryption and authentication mechanisms in Wi-Fi networks.
- Conduct regular security audits and assessments to identify and mitigate potential vulnerabilities.
Patching and Updates
- Stay informed about security updates and patches released by Samsung for the Galaxy S3 i9305 4.4.4 devices.