Critical Vulnerability in jackson-databind: Serialization Gadget Interaction Flaw
Summary
CVE-2020-10969: FasterXML jackson-databind 2.x before 2.9.10.4 mishandles the interaction between serialization gadgets and typing, related to javax.swing.JEditorPane. Affects jackson-databind across 2 version ranges.
< 2.11.1-1
>= 50791cc7856376949287e0be3e96147665ab8f68, < e8697cdbf415028b171f9b7698f3308eda00a3c7
Fixed in 2.11.1-1. How to fix ↓
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Background
jackson-databind is a core component of the FasterXML Jackson library, widely used for converting Java objects to JSON and vice versa. It provides powerful data-binding capabilities, allowing developers to easily serialize and deserialize Java objects. However, prior to version 2.9.10.4, jackson-databind was susceptible to a vulnerability that could be exploited through serialization gadgets, particularly affecting the handling of javax.swing.JEditorPane.
Vulnerability Detail
The vulnerability, identified as CVE-2020-10969, arises from improper handling of serialization gadgets in jackson-databind versions 2.x before 2.9.10.4. This flaw allows attackers to manipulate the serialization process, potentially leading to remote code execution. The issue is particularly concerning as it can be exploited without user interaction, making it a significant risk for applications relying on this library.
How To Fix
Minimum fixed version
2.11.1-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade jackson-databindTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate upgrading is not feasible, consider implementing input validation and sanitization to mitigate the risk of exploitation. Additionally, restrict the use of serialization features in your application until the upgrade can be completed.
Conclusion
CVE-2020-10969 represents a significant security risk for applications using jackson-databind versions prior to 2.9.10.4. It is crucial for developers to upgrade to the latest version to mitigate this vulnerability and protect their applications from potential exploitation.
See every vulnerability recorded for jackson-databind →
FAQ
CVE-2020-10969 is a vulnerability in jackson-databind that allows for the exploitation of serialization gadgets, potentially leading to remote code execution.
Versions of jackson-databind prior to 2.9.10.4 are affected by this vulnerability.
You can use Vulert, which monitors open-source vulnerabilities in your software by analyzing your manifest file like package-lock.json. Visit Vulert Scanner to check your application without any signup.
The CVSS score for CVE-2020-10969 is 8.8, indicating a high severity level.
If you cannot upgrade immediately, implement input validation and restrict serialization features until you can apply the fix.
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