XML External Entity Vulnerability in WSO2 Identity Server by WSO2
CVE-2016-4312

7.5HIGH

Key Information:

Vendor

Wso2

Status
Identity Server
Vendor
CVE Published:
17 February 2017

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2016-4312?

The XML External Entity (XXE) vulnerability in the XACML flow feature of WSO2 Identity Server 5.1.0 enables remote authenticated users with access to XACML features to exploit crafted XACML requests. This vulnerability may permit unauthorized access to arbitrary files, lead to denial of service, and facilitate server-side request forgery (SSRF) attacks. It poses significant risk if combined with other vulnerabilities, allowing exploitation without authentication.

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Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2016-4312 - Proof of Concept

References

https://www.exploit-db.com/exploits/40239/
exploitx_refsource_EXPLOIT-DB
http://www.securityfocus.com/archive/1/539199/100/0/threaded
mailing-listx_refsource_BUGTRAQ
http://www.securityfocus.com/bid/92485
vdb-entryx_refsource_BID

EPSS Score

5% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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