CVE-2022-42003 : Security Advisory and Response

A vulnerability in FasterXML jackson-databind could lead to resource exhaustion due to a lack of check in primitive value deserializers when the UNWRAP_SINGLE_VALUE_ARRAYS feature is enabled.

Understanding CVE-2022-42003

This CVE identifies a flaw in FasterXML jackson-databind that could allow resource exhaustion under specific conditions.

What is CVE-2022-42003?

The vulnerability in FasterXML jackson-databind before versions 2.13.4.1 and 2.12.17.1 can result in resource exhaustion when deep wrapper array nesting occurs, triggered by the UNWRAP_SINGLE_VALUE_ARRAYS feature.

The Impact of CVE-2022-42003

Exploitation of this vulnerability could lead to resource exhaustion, potentially causing denial of service (DoS) conditions in affected systems.

Technical Details of CVE-2022-42003

This section dives into the specifics of the CVE.

Vulnerability Description

The vulnerability stems from a lack of validation in primitive value deserializers, allowing for deep wrapper array nesting when UNWRAP_SINGLE_VALUE_ARRAYS is active.

Affected Systems and Versions

All versions of FasterXML jackson-databind prior to 2.13.4.1 and 2.12.17.1 are vulnerable to this issue.

Exploitation Mechanism

An attacker could exploit this vulnerability by crafting malicious input that triggers the deep wrapper array nesting, leading to resource exhaustion.

Mitigation and Prevention

Understanding how to mitigate and prevent the exploitation of CVE-2022-42003 is crucial.

Immediate Steps to Take

Update FasterXML jackson-databind to versions 2.13.4.1 or 2.12.17.1 to patch the vulnerability.

Long-Term Security Practices

Regularly update software components to the latest versions to protect against known vulnerabilities.
Implement input validation mechanisms to prevent malicious data from triggering vulnerabilities.

Patching and Updates

Stay informed about security advisories from FasterXML and apply patches promptly to safeguard systems against potential attacks.