CVE-2018-3721 Explained : Impact and Mitigation
Learn about CVE-2018-3721 affecting the lodash node module before version 4.17.5. Find out how attackers can exploit this Modification of Assumed-Immutable Data vulnerability and steps to prevent unauthorized changes.
The lodash node module before version 4.17.5 is vulnerable to Modification of Assumed-Immutable Data (MAID) allowing attackers to manipulate the prototype of "Object" and modify properties across all objects.
Understanding CVE-2018-3721
The vulnerability in the lodash node module poses a risk due to the ability to modify assumed-immutable data, potentially leading to unauthorized changes in object properties.
What is CVE-2018-3721?
The CVE-2018-3721 vulnerability affects versions of the lodash node module prior to 4.17.5, enabling attackers to alter the prototype of "Object" using proto and manipulate properties across all objects.
The Impact of CVE-2018-3721
Exploiting this vulnerability allows malicious users to add or modify properties that will be present on all objects, potentially leading to unauthorized access or data manipulation.
Technical Details of CVE-2018-3721
The technical aspects of the CVE-2018-3721 vulnerability provide insight into its nature and potential risks.
Vulnerability Description
The vulnerability in the lodash node module, specifically versions before 4.17.5, allows for the Modification of Assumed-Immutable Data (MAID) through functions like defaultsDeep, merge, and mergeWith, enabling unauthorized changes to object properties.
Affected Systems and Versions
- Product: lodash node module
- Vendor: HackerOne
- Vulnerable Versions: Versions before 4.17.5
Exploitation Mechanism
Attackers exploit this vulnerability by manipulating the prototype of "Object" using proto, granting them the ability to add or modify properties across all objects.
Mitigation and Prevention
Protecting systems from CVE-2018-3721 requires immediate actions and long-term security measures.
Immediate Steps to Take
- Update the lodash node module to version 4.17.5 or later to mitigate the vulnerability.
- Monitor for any unauthorized changes in object properties.
Long-Term Security Practices
- Regularly review and update dependencies to ensure the latest security patches are applied.
- Implement code reviews and security testing to identify and address vulnerabilities proactively.
Patching and Updates
- Apply patches and updates provided by the vendor promptly to address known vulnerabilities and enhance system security.