Description
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.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected products
- WSO2 / WSO2 API Manager3.1.0 – 3.1.0.278
- WSO2 / WSO2 API Manager3.2.0 – 3.2.0.368
- WSO2 / WSO2 API Manager0 – 3.1.0
- WSO2 / WSO2 API Manager4.0.0 – 4.0.0.280
- WSO2 / WSO2 API Manager4.1.0 – 4.1.0.206
- WSO2 / WSO2 API Manager4.2.0 – 4.2.0.144
- WSO2 / WSO2 API Manager4.3.0 – 4.3.0.57
- WSO2 / WSO2 Identity Server5.11.0 – 5.11.0.329
- WSO2 / WSO2 Identity Server0 – 5.10.0
- WSO2 / WSO2 Identity Server5.10.0 – 5.10.0.300
- WSO2 / WSO2 Identity Server6.0.0 – 6.0.0.179
- WSO2 / WSO2 Identity Server6.1.0 – 6.1.0.136
- WSO2 / WSO2 Identity Server as Key Manager0 – 5.10.0
- WSO2 / WSO2 Identity Server as Key Manager5.10.0 – 5.10.0.296
- WSO2 / WSO2 Open Banking AM0 – 2.0.0
- WSO2 / WSO2 Open Banking AM2.0.0 – 2.0.0.328
- WSO2 / WSO2 Open Banking IAM0 – 2.0.0
- WSO2 / WSO2 Open Banking IAM2.0.0 – 2.0.0.348