XML External Entity injection in TIBCO EBX



Published: 2021-01-13
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2020-27148
CWE ID CWE-611
Exploitation vector Network
Public exploit N/A
Vulnerable software
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TIBCO EBX Add-ons
Web applications / Modules and components for CMS

Vendor TIBCO

Security Advisory

This security advisory describes one medium risk vulnerability.

1) XML External Entity injection

Risk: Medium

CVSSv3: 6.2 [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-27148

CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied XML input. A remote authenticated attacker can pass a specially crafted XML code to the affected application, view contents of arbitrary files on the system or cause a partial denial of service (DoS) condition on the target system.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.

This vulnerability affects the following components:

  • TIBCO EBX Add-on for Oracle Hyperion EPM
  • TIBCO EBX Data Exchange Add-on
  • TIBCO EBX Insight Add-on

Mitigation

Install updates from vendor's website.

Vulnerable software versions

TIBCO EBX Add-ons: 4.4.2

CPE External links

http://www.tibco.com/services/support/advisories
https://www.tibco.com/support/advisories/2021/01/tibco-security-advisory-january-12-2021-tibco-ebx

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.