CVE-2020-9546 Explained : Impact and Mitigation
Learn about CVE-2020-9546 involving FasterXML jackson-databind 2.x mishandling serialization gadgets and typing. Find out the impact, affected systems, exploitation, and mitigation steps.
FasterXML jackson-databind 2.x before 2.9.10.4 mishandles serialization gadgets and typing, impacting org.apache.hadoop.shaded.com.zaxxer.hikari.HikariConfig.
Understanding CVE-2020-9546
This CVE involves mishandling the interaction between serialization gadgets and typing in FasterXML jackson-databind.
What is CVE-2020-9546?
The vulnerability in FasterXML jackson-databind 2.x before 2.9.10.4 allows for improper handling of serialization gadgets and typing, particularly affecting org.apache.hadoop.shaded.com.zaxxer.hikari.HikariConfig.
The Impact of CVE-2020-9546
The vulnerability can be exploited to execute arbitrary code, leading to potential remote code execution and unauthorized access to sensitive information.
Technical Details of CVE-2020-9546
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
FasterXML jackson-databind 2.x before 2.9.10.4 mishandles the interaction between serialization gadgets and typing, specifically impacting org.apache.hadoop.shaded.com.zaxxer.hikari.HikariConfig.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: All versions prior to 2.9.10.4
Exploitation Mechanism
The vulnerability can be exploited by an attacker to execute arbitrary code through improper handling of serialization gadgets and typing.
Mitigation and Prevention
Protecting systems from CVE-2020-9546 is crucial to maintaining security.
Immediate Steps to Take
- Update FasterXML jackson-databind to version 2.9.10.4 or later.
- Implement network security measures to restrict access to potentially vulnerable systems.
- Monitor for any unusual or unauthorized activities on the network.
Long-Term Security Practices
- Regularly update software and libraries to patch known vulnerabilities.
- Conduct security audits and assessments to identify and address potential weaknesses.
- Educate developers and users on secure coding practices and the importance of cybersecurity.
Patching and Updates
Stay informed about security updates and patches released by FasterXML to address vulnerabilities like CVE-2020-9546.