CVE-2020-27336 Explained : Impact and Mitigation
Discover the details of CVE-2020-27336, a low-severity vulnerability in Treck IPv6 before 6.0.1.68, allowing an out-of-bounds read via network access. Learn about the impact, affected systems, and mitigation steps.
An issue was discovered in Treck IPv6 before 6.0.1.68 that could lead to an out-of-bounds read vulnerability when handling packets from unauthenticated remote attackers.
Understanding CVE-2020-27336
This CVE involves improper input validation in the IPv6 component of Treck IPv6, potentially resulting in a security issue.
What is CVE-2020-27336?
CVE-2020-27336 is a vulnerability in Treck IPv6 before version 6.0.1.68 due to improper input validation in the IPv6 component when processing packets from unauthenticated remote attackers. This flaw could allow an attacker to trigger an out-of-bounds read of up to three bytes through network access.
The Impact of CVE-2020-27336
The impact of this vulnerability is rated as low severity with a CVSS base score of 3.7. The attack complexity is high, but it does not require privileges or user interaction. While the confidentiality impact is low, the integrity impact is none, and availability impact is not applicable.
Technical Details of CVE-2020-27336
This section provides more in-depth technical details about the vulnerability.
Vulnerability Description
The vulnerability arises from improper input validation in the IPv6 component of Treck IPv6, allowing an out-of-bounds read of up to three bytes via network access.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: All versions before 6.0.1.68
Exploitation Mechanism
The vulnerability can be exploited by sending a crafted packet to the target system, triggering the out-of-bounds read.
Mitigation and Prevention
It is crucial to take immediate steps to mitigate the risks posed by CVE-2020-27336.
Immediate Steps to Take
- Apply the latest security patches provided by Treck IPv6.
- Implement network-level controls to restrict access to vulnerable components.
- Monitor network traffic for any signs of exploitation.
Long-Term Security Practices
- Regularly update and patch all software components to prevent known vulnerabilities.
- Conduct security assessments and penetration testing to identify and address potential weaknesses.
- Educate users and administrators about safe network practices to minimize risks.
Patching and Updates
Ensure that the Treck IPv6 software is updated to version 6.0.1.68 or later to address the vulnerability.