CVE-2022-24713 : Security Advisory and Response
Learn about the CVE-2022-24713 vulnerability in Rust's regex crate, allowing denial of service attacks through crafted regular expressions. Upgrade to version 1.5.5 for mitigation.
Regular expression denial of service vulnerability exists in the regex crate of Rust programming language. The issue allows attackers to craft regexes that bypass mitigations, leading to denial of service attacks.
Understanding CVE-2022-24713
This CVE involves a vulnerability in the Rust regex crate, affecting versions prior to 1.5.5.
What is CVE-2022-24713?
The regex crate in Rust implements regular expressions and contains mitigations to prevent denial of service attacks. A bug in the mitigations allows specially crafted regexes to bypass security measures, enabling attackers to launch DoS attacks.
The Impact of CVE-2022-24713
The vulnerability poses a high risk with a CVSS base score of 7.5. Attackers can exploit it remotely without requiring user interaction, potentially causing service unavailability.
Technical Details of CVE-2022-24713
Vulnerability Description
The bug in the regex crate's mitigations allows for crafting malicious regexes that can exhaust system resources, resulting in denial of service attacks.
Affected Systems and Versions
All versions of the regex crate before 1.5.5 are impacted by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by sending specially crafted regexes to services that accept untrusted regex inputs.
Mitigation and Prevention
Immediate Steps to Take
Users are strongly advised to upgrade to regex crate version 1.5.5 or newer to mitigate the risk of exploitation.
Long-Term Security Practices
Regularly update software dependencies to patch known vulnerabilities and enhance security measures.
Patching and Updates
Ensure timely installation of security patches and stay informed about security advisories to protect against emerging threats.