FasterXML jackson-databind up to 2.9.10 JSON Endpoint input validation

Summaryinfo

A vulnerability described as critical has been identified in FasterXML jackson-databind up to 2.9.10. Affected is an unknown function of the component JSON Endpoint. Executing a manipulation can lead to input validation. This vulnerability appears as CVE-2019-17531. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability has been found in FasterXML jackson-databind up to 2.9.10 (Programming Language Software) and classified as critical. This vulnerability affects an unknown code block of the component JSON Endpoint. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A Polymorphic Typing issue was discovered in FasterXML jackson-databind 2.0.0 through 2.9.10. When Default Typing is enabled (either globally or for a specific property) for an externally exposed JSON endpoint and the service has the apache-log4j-extra (version 1.2.x) jar in the classpath, and an attacker can provide a JNDI service to access, it is possible to make the service execute a malicious payload.

The weakness was presented 10/12/2019. This vulnerability was named CVE-2019-17531 since 10/12/2019. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 236644 (Alibaba Cloud Linux 3 : 0020: pki-core:10.6 (ALINUX3-SA-2021:0020)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (236644). See VDB-158271 for similar entry. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Programming Language Software

Vendor

• FasterXML

Name

• jackson-databind

Version

• 2.9.0
• 2.9.1
• 2.9.2
• 2.9.3
• 2.9.4
• 2.9.5
• 2.9.6
• 2.9.7
• 2.9.8
• 2.9.9
• 2.9.10

License

• open-source

Website

• Product: https://github.com/FasterXML/jackson-databind/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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