Apache Commons Configuration up to 2.6 YAML File Parser input validation

Summaryinfo

A vulnerability was found in Apache Commons Configuration 2.2/2.3/2.4/2.5/2.6 and classified as critical. This affects an unknown function of the component YAML File Parser. Such manipulation leads to input validation. This vulnerability is referenced as CVE-2020-1953. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Apache Commons Configuration 2.2/2.3/2.4/2.5/2.6 and classified as critical. Affected by this issue is an unknown code of the component YAML File Parser. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Apache Commons Configuration uses a third-party library to parse YAML files which by default allows the instantiation of classes if the YAML includes special statements. Apache Commons Configuration versions 2.2, 2.3, 2.4, 2.5, 2.6 did not change the default settings of this library. So if a YAML file was loaded from an untrusted source, it could therefore load and execute code out of the control of the host application.

The weakness was published 03/13/2020 (Website). The advisory is available at lists.apache.org. This vulnerability is handled as CVE-2020-1953 since 12/02/2019. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 03/14/2020).

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Apache

Name

• Commons Configuration

Version

• 2.2
• 2.3
• 2.4
• 2.5
• 2.6

License

• open-source

Website

• Vendor: https://www.apache.org/

CPE 2.3info

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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