Apache Struts up to 2.5.20 Double OGNL Evaluation Attribute dynamically-determined object attributes

Summaryinfo

A vulnerability labeled as critical has been found in Apache Struts up to 2.5.20. This impacts an unknown function of the component Double OGNL Evaluation. Such manipulation as part of Attribute leads to dynamically-determined object attributes. This vulnerability is uniquely identified as CVE-2019-0230. The attack can be launched remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Apache Struts up to 2.5.20 (Programming Tool Software). Affected by this issue is an unknown part of the component Double OGNL Evaluation. The manipulation as part of a Attribute leads to a dynamically-determined object attributes vulnerability. Using CWE to declare the problem leads to CWE-915. The product receives input from an upstream component that specifies multiple attributes, properties, or fields that are to be initialized or updated in an object, but it does not properly control which attributes can be modified. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Apache Struts 2.0.0 to 2.5.20 forced double OGNL evaluation, when evaluated on raw user input in tag attributes, may lead to remote code execution.

The weakness was disclosed 09/14/2020 (Website). The advisory is shared for download at cwiki.apache.org. This vulnerability is handled as CVE-2019-0230 since 11/14/2018. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k.

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 Exploit-DB (49068). The entry VDB-161193 is pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Programming Tool Software

Vendor

• Apache

Name

• Struts

Version

• 2.5.0
• 2.5.1
• 2.5.2
• 2.5.3
• 2.5.4
• 2.5.5
• 2.5.6
• 2.5.7
• 2.5.8
• 2.5.9
• 2.5.10
• 2.5.11
• 2.5.12
• 2.5.13
• 2.5.14
• 2.5.15
• 2.5.16
• 2.5.17
• 2.5.18
• 2.5.19
• 2.5.20

License

• open-source

Website

• Vendor: https://www.apache.org/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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