CVE-2018-21232 : Vulnerability Insights and Analysis
Learn about CVE-2018-21232, a vulnerability in re2c causing excessive stack usage due to uncontrolled recursion. Find out how to mitigate and prevent potential DoS attacks.
re2c before version 2.0 experiences uncontrolled recursion, causing excessive stack usage in the find_fixed_tags function.
Understanding CVE-2018-21232
This CVE involves a vulnerability in re2c that leads to unregulated recursion and subsequent stack consumption.
What is CVE-2018-21232?
re2c prior to version 2.0 suffers from uncontrolled recursion, resulting in excessive stack usage within the find_fixed_tags function.
The Impact of CVE-2018-21232
The vulnerability can potentially lead to denial of service (DoS) attacks due to the excessive stack consumption caused by unregulated recursion.
Technical Details of CVE-2018-21232
This section provides detailed technical information about the CVE.
Vulnerability Description
Prior to version 2.0, re2c exhibits unregulated recursion leading to excessive stack usage in the find_fixed_tags function.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: Not applicable
Exploitation Mechanism
The vulnerability is exploited through uncontrolled recursion, causing excessive stack consumption in the find_fixed_tags function.
Mitigation and Prevention
Protecting systems from CVE-2018-21232 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Upgrade re2c to version 2.0 or newer to mitigate the vulnerability.
- Monitor system resources for any unusual stack usage patterns.
Long-Term Security Practices
- Regularly update software and libraries to the latest versions.
- Implement stack usage monitoring tools to detect abnormal behavior.
Patching and Updates
- Apply patches provided by re2c promptly to address the vulnerability and prevent exploitation.