CVE-2023-3894: Denial of Service in jackson-dataformats-text
Summary
CVE-2023-3894: Denial of service in jackson-dataformats-text. Affects com.fasterxml.jackson.dataformat:jackson-dataformats-text versions < 2.15.0. Fixed in 2.15.0. How to fix ↓
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Background
The jackson-dataformats-text package is a part of the Maven ecosystem and is used for parsing TOML data. It provides functionality to convert TOML data into Java objects. However, this package is vulnerable to a Denial of Service (DOS) attack. If the parser is running on user-supplied input, an attacker can provide malicious content that causes the parser to crash due to a stack overflow. This vulnerability can be exploited to launch a DOS attack, disrupting the availability of the application.
Vulnerability Detail
The vulnerability in jackson-dataformats-text arises from a lack of input validation. When the parser encounters specially crafted TOML data, it fails to handle the input correctly, leading to a stack overflow and subsequent crash. This vulnerability allows an attacker to send malicious TOML data to the application, causing it to become unresponsive and potentially impacting the entire system. The severity of this vulnerability is considered moderate with a CVSS score of 5.8.
How To Fix
Minimum fixed version
2.15.0
This is the first release that contains the fix.
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Workaround
If upgrading the package is not immediately feasible, a temporary workaround is to implement input validation and sanitization on the user-supplied TOML data. By carefully validating and filtering the input, the risk of encountering malicious content can be mitigated. Here is an example of how to sanitize TOML data using a custom function:
public String sanitizeTOML(String input) {
// Implement input validation and sanitization logic here
// Return the sanitized TOML data
}
Conclusion
In conclusion, the jackson-dataformats-text package is vulnerable to a Denial of Service (DOS) attack due to a lack of input validation. Upgrading to version 2.15.0 or higher is recommended to fix this vulnerability. If immediate upgrade is not possible, implementing input validation and sanitization can serve as a temporary workaround. For further assistance and support in vulnerability remediation, please contact DevNack.com.
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FAQ
This vulnerability allows an attacker to launch a Denial of Service (DOS) attack by crashing the jackson-dataformats-text parser. This can lead to application unresponsiveness and potential system-wide impact.
You can use the Vulert Playground at Vulert Scanner to check if your application is affected by this vulnerability. Simply provide your pom.xml file, and Vulert will analyze it for any open-source vulnerabilities, including this one.
Yes, upgrading the jackson-dataformats-text package to version 2.15.0 or higher will fix this vulnerability. It is recommended to update to the latest version to ensure the security of your application.
If upgrading the package is not immediately feasible, you can implement input validation and sanitization on the user-supplied TOML data. This can help mitigate the risk of encountering malicious content and reduce the impact of the vulnerability.
The severity of this vulnerability is considered moderate with a CVSS score of 5.8. While it can lead to a Denial of Service (DOS) attack, it does not pose a high risk of data compromise or remote code execution.
