CVE-2022-46663 : Security Advisory and Response
Discover how CVE-2022-46663 in GNU Less before version 609 allows attackers to bypass ANSI escape sequence filtering, potentially leading to security risks in terminal output. Learn about the impact, affected systems, and mitigation steps.
A vulnerability in GNU Less before version 609 can allow specially crafted data to bypass filtering of ANSI escape sequences when using the "less -R" command.
Understanding CVE-2022-46663
This section provides insights into the nature and impact of the CVE-2022-46663 vulnerability.
What is CVE-2022-46663?
The CVE-2022-46663 vulnerability exists in GNU Less versions prior to 609 and allows attackers to send ANSI escape sequences to the terminal, bypassing the filtering mechanism of the "less -R" command.
The Impact of CVE-2022-46663
Exploitation of this vulnerability could result in ANSI escape sequences being improperly displayed in the terminal, leading to potential security risks and manipulation of terminal output.
Technical Details of CVE-2022-46663
In this section, we delve into the technical aspects of the CVE-2022-46663 vulnerability.
Vulnerability Description
Crafted data in GNU Less before version 609 can evade the ANSI escape sequence filtering implemented by the "less -R" command, allowing malicious actors to influence terminal output.
Affected Systems and Versions
All versions of GNU Less preceding version 609 are affected by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by sending specially crafted data that includes ANSI escape sequences, triggering the bypass of filtering when using the "less -R" command.
Mitigation and Prevention
This section outlines essential steps to mitigate and prevent the exploitation of CVE-2022-46663.
Immediate Steps to Take
Users are advised to update GNU Less to version 609 or later to prevent the bypass of ANSI escape sequence filtering in the "less -R" command.
Long-Term Security Practices
Implementing secure coding practices and regularly updating software components can help reduce the risk of similar vulnerabilities in the future.
Patching and Updates
Stay informed about security advisories and apply patches promptly to patch vulnerabilities like CVE-2022-46663.