This vulnerability allows an external attacker to edit or add new properties to an object. It is caused by improper validation of incoming JSON keys, enabling the __proto__ property to be edited. The CVSS score for this vulnerability is 5.3, categorizing it as medium severity, which poses a notable risk to organizations that utilize xml2js version 0.4.23.
Risk to organizations includes potential unauthorized modifications to object properties, which could lead to further exploitation or data integrity issues. Given the attack vector is network-based and the complexity is low, attackers may exploit this vulnerability with minimal effort. Organizations should prioritize patching immediately.
Currently, there is no known public exploit, and the vulnerability is not listed in the KEV (Known Exploited Vulnerabilities) database. However, the lack of availability of known exploits does not diminish the importance of addressing this vulnerability in a timely manner.
Organizations using xml2js are strongly advised to assess their systems and apply necessary updates to mitigate any potential risks associated with this vulnerability.
Vulnerability Details
The vulnerability identified as CVE-2023-0842 affects xml2js version 0.4.23. It allows external attackers to manipulate object properties due to improper validation of JSON keys. The official description states that the application fails to properly validate incoming JSON keys, allowing for the editing of the __proto__ property.
The CVSS score for this vulnerability is 5.3, indicating a medium severity level. The vulnerability is classified under CWE-1321, relating to improper validation of untrusted input. The vulnerability was published on April 5, 2023.
Technical Analysis
The root cause of this vulnerability is the application's failure to adequately validate incoming JSON keys, leading to the manipulation of the __proto__ property. The attack vector is network-based, with a low attack complexity, meaning that an attacker does not require special conditions to exploit this vulnerability.
No privileges are required for exploitation, and user interaction is not necessary. The integrity impact is categorized as low, which means that the modification of object properties can lead to significant issues within the application's logic and data integrity.
Risk & Impact Analysis
Real-world deployment of xml2js version 0.4.23 presents a considerable risk for organizations, particularly those processing sensitive data. The potential for unauthorized modifications can lead to data integrity breaches, enabling attackers to manipulate application behavior.
The urgency of addressing this vulnerability is underscored by its medium CVSS score. Organizations should address this in their priority patch cycle to mitigate any potential risks associated with exploitation.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The only affected version is xml2js version 0.4.23. Organizations should ensure they are not using this version or should apply any available patches.
Mitigation & Remediation
To mitigate this vulnerability, it is crucial to update to the latest version of xml2js. Organizations should regularly check for updates and apply patches promptly. If an immediate update is not possible, consider implementing configuration hardening and network controls to limit exposure.
For additional guidance on effective security measures, organizations can refer to penetration testing to assess their security posture.
Detection Guidance
Organizations should monitor logs for any unexpected changes to object properties, which may indicate exploitation attempts. Behavioral anomalies in the application should also be investigated, as they could signal a successful attack.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its representation of the ongoing issues with input validation in software development. As applications increasingly integrate third-party libraries like xml2js, the need for rigorous security practices becomes paramount.
Security teams should take note of patterns in vulnerabilities related to improper input validation and ensure that comprehensive testing is part of their development lifecycle. For further reading on effective security practices, organizations can explore the following resources: penetration testing methodology, vulnerability management program design, and web application penetration testing to enhance their security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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