langchain-ai LangChain XMLOutputParser xml entity expansion

Summaryinfo

A vulnerability was found in langchain-ai LangChain. It has been rated as problematic. This affects the function XMLOutputParser. Performing a manipulation results in xml entity expansion. This vulnerability is known as CVE-2024-1455. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as problematic has been found in langchain-ai LangChain (version unknown). This affects the function XMLOutputParser. The manipulation with an unknown input leads to a xml entity expansion vulnerability. CWE is classifying the issue as CWE-776. The product uses XML documents and allows their structure to be defined with a Document Type Definition (DTD), but it does not properly control the number of recursive definitions of entities. This is going to have an impact on availability. The summary by CVE is:

The XMLOutputParser in LangChain uses the etree module from the XML parser in the standard python library which has some XML vulnerabilities; see: https://docs.python.org/3/library/xml.html This primarily affects users that combine an LLM (or agent) with the `XMLOutputParser` and expose the component via an endpoint on a web-service. This would allow a malicious party to attempt to manipulate the LLM to produce a malicious payload for the parser that would compromise the availability of the service. A successful attack is predicated on: 1. Usage of XMLOutputParser 2. Passing of malicious input into the XMLOutputParser either directly or by trying to manipulate an LLM to do so on the users behalf 3. Exposing the component via a web-service

The advisory is shared at huntr.com. This vulnerability is uniquely identified as CVE-2024-1455 since 02/12/2024. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Artificial Intelligence Software

Vendor

• langchain-ai

Name

• LangChain

License

• open-source

Website

• Product: https://github.com/langchain-ai/langchain/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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