CVE-2020-10673 : Security Advisory and Response

FasterXML jackson-databind 2.x before 2.9.10.4 mishandles the interaction between serialization gadgets and typing, related to com.caucho.config.types.ResourceRef (aka caucho-quercus).

Understanding CVE-2020-10673

This CVE involves a vulnerability in FasterXML jackson-databind that affects versions prior to 2.9.10.4.

What is CVE-2020-10673?

The vulnerability in FasterXML jackson-databind 2.x before 2.9.10.4 is due to mishandling the interaction between serialization gadgets and typing, specifically related to com.caucho.config.types.ResourceRef.

The Impact of CVE-2020-10673

The vulnerability could potentially allow attackers to execute arbitrary code or cause a denial of service (DoS) on the affected system.

Technical Details of CVE-2020-10673

FasterXML jackson-databind 2.x before 2.9.10.4 is susceptible to the following:

Vulnerability Description

The issue arises from the mishandling of serialization gadgets and typing, particularly involving com.caucho.config.types.ResourceRef.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: All versions prior to 2.9.10.4

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious input to trigger the mishandling of serialization gadgets and typing, leading to potential code execution or DoS.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent exploitation of CVE-2020-10673:

Immediate Steps to Take

Update FasterXML jackson-databind to version 2.9.10.4 or later to mitigate the vulnerability.
Monitor for any unusual activities on the system that could indicate exploitation.

Long-Term Security Practices

Regularly update software and libraries to the latest secure versions.
Implement input validation and sanitization to prevent malicious input.

Patching and Updates

Stay informed about security updates and patches related to FasterXML jackson-databind to apply them promptly.