CVE-2020-13871 Explained : Impact and Mitigation
Learn about CVE-2020-13871, a use-after-free vulnerability in SQLite 3.32.2 due to a late parse tree rewrite for window functions. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
SQLite 3.32.2 has a use-after-free vulnerability in resetAccumulator in select.c due to a late parse tree rewrite for window functions.
Understanding CVE-2020-13871
What is CVE-2020-13871?
SQLite 3.32.2 is impacted by a use-after-free vulnerability in the resetAccumulator function within select.c, caused by a delayed parse tree rewrite for window functions.
The Impact of CVE-2020-13871
This vulnerability could allow an attacker to execute arbitrary code or cause a denial of service by exploiting the use-after-free issue in SQLite 3.32.2.
Technical Details of CVE-2020-13871
Vulnerability Description
The use-after-free vulnerability in resetAccumulator in select.c of SQLite 3.32.2 stems from a timing issue related to the parse tree rewrite for window functions.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by an attacker to trigger the use-after-free condition in SQLite 3.32.2, potentially leading to arbitrary code execution or denial of service.
Mitigation and Prevention
Immediate Steps to Take
- Apply security patches provided by SQLite to address the vulnerability.
- Monitor official sources for updates and advisories regarding this issue.
Long-Term Security Practices
- Regularly update SQLite and other software components to the latest versions.
- Implement secure coding practices to prevent similar vulnerabilities in the future.
Patching and Updates
- Ensure timely installation of security updates and patches released by SQLite to mitigate the use-after-free vulnerability in SQLite 3.32.2.