CVE-2020-24341 Explained : Impact and Mitigation
Discover the impact of CVE-2020-24341, a vulnerability in picoTCP and picoTCP-NG versions up to 1.7.0. Learn about the risks, affected systems, and mitigation steps.
An issue was discovered in picoTCP and picoTCP-NG through 1.7.0. The TCP input data processing function in pico_tcp.c does not validate the length of incoming TCP packets, leading to potential Denial-of-Service attacks or information leaks.
Understanding CVE-2020-24341
This CVE involves a vulnerability in picoTCP and picoTCP-NG versions up to 1.7.0 that can be exploited to cause Denial-of-Service or information leakage.
What is CVE-2020-24341?
The vulnerability arises from the lack of validation for the length of incoming TCP packets in the TCP input data processing function of pico_tcp.c.
The Impact of CVE-2020-24341
The vulnerability can result in out-of-bounds reads when assembling received packets into a data segment, potentially leading to Denial-of-Service attacks or information disclosure.
Technical Details of CVE-2020-24341
This section provides more technical insights into the vulnerability.
Vulnerability Description
The issue lies in the TCP input data processing function of picoTCP and picoTCP-NG versions up to 1.7.0, where the length of incoming TCP packets is not properly validated.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: Up to 1.7.0
Exploitation Mechanism
The vulnerability can be exploited by crafting malicious TCP packets with manipulated lengths, triggering out-of-bounds reads during packet assembly.
Mitigation and Prevention
To address CVE-2020-24341, follow these mitigation strategies:
Immediate Steps to Take
- Update picoTCP and picoTCP-NG to versions beyond 1.7.0 if available.
- Implement network-level protections to filter out potentially malicious TCP packets.
Long-Term Security Practices
- Regularly monitor and update network security measures.
- Conduct security audits to identify and address vulnerabilities proactively.
Patching and Updates
- Stay informed about security advisories and patches released by the software vendors.
- Apply patches promptly to mitigate known vulnerabilities.