CVE-2021-29922 : Vulnerability Insights and Analysis
Learn about CVE-2021-29922, a vulnerability in Rust before 1.53.0 allowing attackers to bypass IP address-based access control, its impact, affected systems, and mitigation steps.
A vulnerability in Rust before version 1.53.0 can lead to an access control bypass under certain conditions. Attackers may exploit this issue to bypass IP address-based access control due to unexpected octal interpretation.
Understanding CVE-2021-29922
This section will cover the details of the CVE-2021-29922 vulnerability.
What is CVE-2021-29922?
The vulnerability exists in Rust's library where extraneous zero characters at the beginning of an IP address string are not properly handled, potentially enabling attackers to circumvent IP address-based access controls.
The Impact of CVE-2021-29922
If exploited, the vulnerability could allow unauthorized access to systems or resources protected by IP address-based access controls, compromising the security of affected systems.
Technical Details of CVE-2021-29922
Delve deeper into the technical aspects of CVE-2021-29922 to better understand the nature of the vulnerability.
Vulnerability Description
The issue arises from the inadequate handling of zero characters at the start of an IP address string, leading to unintended interpretation and exploitation.
Affected Systems and Versions
The vulnerability affects Rust versions prior to 1.53.0. Systems utilizing affected versions may be vulnerable to IP address-based security bypass.
Exploitation Mechanism
By manipulating IP address strings with extraneous zero characters, threat actors could exploit this flaw to breach IP address-dependent security measures.
Mitigation and Prevention
Explore the steps to mitigate the risks posed by CVE-2021-29922 and secure your systems.
Immediate Steps to Take
Users are advised to update Rust to version 1.53.0 or later to address this vulnerability and prevent potential access control bypasses.
Long-Term Security Practices
Implement robust access control mechanisms beyond IP address-based restrictions to enhance overall system security and reduce reliance on single security measures.
Patching and Updates
Regularly monitor and apply software patches and updates to ensure that known vulnerabilities, such as CVE-2021-29922, are remediated effectively.