CVE-2020-36518 : Security Advisory and Response

CVE-2020-36518 is a vulnerability in jackson-databind before version 2.13.0 that allows a Java StackOverflow exception and denial of service through a large depth of nested objects.

Understanding CVE-2020-36518

This CVE identifies a specific vulnerability in the jackson-databind library that can lead to a denial of service attack.

What is CVE-2020-36518?

The vulnerability in jackson-databind before version 2.13.0 can be exploited to cause a Java StackOverflow exception, resulting in a denial of service by utilizing a large number of nested objects.

The Impact of CVE-2020-36518

The impact of this vulnerability is the potential for an attacker to disrupt the normal operation of a system by triggering a Java StackOverflow exception, leading to a denial of service condition.

Technical Details of CVE-2020-36518

This section provides more in-depth technical details about the CVE.

Vulnerability Description

The vulnerability in jackson-databind before version 2.13.0 allows for a Java StackOverflow exception and denial of service through the manipulation of nested objects.

Affected Systems and Versions

Vendor: n/a
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Affected Version: n/a

Exploitation Mechanism

The vulnerability can be exploited by crafting malicious input that triggers a large depth of nested objects, causing the Java StackOverflow exception and subsequent denial of service.

Mitigation and Prevention

To address CVE-2020-36518, follow these mitigation and prevention strategies.

Immediate Steps to Take

Update jackson-databind to version 2.13.0 or newer to mitigate the vulnerability.
Monitor system logs for any signs of unusual activity that could indicate a denial of service attack.

Long-Term Security Practices

Regularly update software libraries and dependencies to ensure the latest security patches are applied.
Implement input validation mechanisms to prevent the exploitation of similar vulnerabilities in the future.

Patching and Updates

Ensure timely patching of software components and libraries to address known vulnerabilities like CVE-2020-36518.