CVE-2021-38561 Explained : Impact and Mitigation
Learn about the CVE-2021-38561 vulnerability in golang.org/x/text before 0.3.7, its impact, affected systems, and mitigation strategies. Update to version 0.3.7 to secure your system.
A detailed analysis of CVE-2021-38561 focusing on the impact, technical details, and mitigation strategies.
Understanding CVE-2021-38561
This section provides insights into the nature and implications of the CVE-2021-38561 vulnerability.
What is CVE-2021-38561?
The CVE-2021-38561 vulnerability exists in golang.org/x/text/language in golang.org/x/text before version 0.3.7. It can result in a panic with an out-of-bounds read during BCP 47 language tag parsing. The mishandling of index calculation can lead to a denial-of-service attack when parsing untrusted user input.
The Impact of CVE-2021-38561
The vulnerability can be exploited as a vector for denial-of-service attacks, potentially affecting systems relying on golang.org/x/text language processing before version 0.3.7.
Technical Details of CVE-2021-38561
Explore the specifics of the vulnerability to understand its implications and severity.
Vulnerability Description
The flaw in golang.org/x/text/language allows for an out-of-bounds read during BCP 47 language tag parsing due to mishandled index calculation.
Affected Systems and Versions
All versions of golang.org/x/text before 0.3.7 are affected by CVE-2021-38561, highlighting the importance of timely updates.
Exploitation Mechanism
Adversaries can exploit this vulnerability by manipulating BCP 47 language tag parsing to cause a panic through an out-of-bounds read.
Mitigation and Prevention
Discover effective strategies to mitigate the risks posed by CVE-2021-38561 and protect vulnerable systems.
Immediate Steps to Take
Users are advised to update golang.org/x/text to version 0.3.7 or above to patch the vulnerability and prevent potential exploitation.
Long-Term Security Practices
Implement secure coding practices and ensure regular updates to prevent the emergence of similar vulnerabilities in the future.
Patching and Updates
Stay informed about security advisories and promptly apply patches and updates to mitigate known vulnerabilities and enhance system security.