WSO2 API Manager XML Parser xml external entity reference

Summaryinfo

A vulnerability described as problematic has been identified in WSO2 API Manager, Identity Server, Open Banking AM, Open Banking IAM and Identity Server as Key Manager. Affected by this issue is some unknown functionality of the component XML Parser. Such manipulation leads to xml external entity reference. This vulnerability is listed as CVE-2024-2374. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in WSO2 API Manager, Identity Server, Open Banking AM, Open Banking IAM and Identity Server as Key Manager and classified as critical. Affected by this issue is an unknown code block of the component XML Parser. The manipulation with an unknown input leads to a xml external entity reference vulnerability. Using CWE to declare the problem leads to CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The XML parsers within multiple WSO2 products accept user-supplied XML data without properly configuring to prevent the resolution of external entities. This omission allows malicious actors to craft XML payloads that exploit the parser's behavior, leading to the inclusion of external resources. By leveraging this vulnerability, an attacker can read confidential files from the file system and access limited HTTP resources reachable by the product. Additionally, the vulnerability can be exploited to perform denial of service attacks by exhausting server resources through recursive entity expansion or fetching large external resources.

The advisory is shared for download at security.docs.wso2.com. This vulnerability is handled as CVE-2024-2374 since 03/11/2024. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2024-27327). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Banking Software

Vendor

• WSO2

Name

• API Manager
• Identity Server
• Identity Server as Key Manager
• Open Banking AM
• Open Banking IAM

License

• commercial

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Once again VulDB remains the best source for vulnerability data.

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