CVE-2020-17445 : What You Need to Know

An issue was discovered in picoTCP 1.7.0 that could lead to a Denial-of-Service due to an Out-of-Bounds Read vulnerability.

Understanding CVE-2020-17445

This CVE identifies a vulnerability in picoTCP 1.7.0 related to processing IPv6 destination options.

What is CVE-2020-17445?

The vulnerability in picoTCP 1.7.0 arises from inadequate validation of the length of the IPv6 destination options header, potentially resulting in an Out-of-Bounds Read.

The Impact of CVE-2020-17445

The vulnerability may lead to a Denial-of-Service condition in the pico_ipv6_process_destopt() function within pico_ipv6.c, depending on the memory protection mechanism.

Technical Details of CVE-2020-17445

This section provides more technical insights into the CVE.

Vulnerability Description

The issue in picoTCP 1.7.0 stems from the lack of proper length validation for the IPv6 destination options header, leading to an Out-of-Bounds Read vulnerability.

Affected Systems and Versions

Affected Version: picoTCP 1.7.0
All systems using this specific version are vulnerable to the exploit.

Exploitation Mechanism

The vulnerability can be exploited by crafting malicious IPv6 packets with specially designed destination options to trigger the Out-of-Bounds Read.

Mitigation and Prevention

Protecting systems from CVE-2020-17445 requires immediate actions and long-term security measures.

Immediate Steps to Take

Implement network-level protections to filter out potentially malicious IPv6 packets.
Monitor network traffic for any signs of exploitation attempts.

Long-Term Security Practices

Regularly update picoTCP to the latest version to patch known vulnerabilities.
Conduct security audits to identify and address any potential weaknesses in network protocols.

Patching and Updates

Apply patches provided by picoTCP promptly to address the vulnerability and enhance system security.