XML External Entity injection in Cisco Hosted Collaboration Mediation Fulfillment - CVE-2020-3256
Published: May 11, 2020
Vulnerability identifier: #VU27689
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-3256
CWE-ID: CWE-611
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to gain access to sensitive information.
The vulnerability exists due to insufficient validation of user-supplied XML input in the web-based management interface. A remote administrator can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.
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.
Affected software
Cisco Hosted Collaboration Mediation Fulfillment
How to mitigate CVE-2020-3256
Install updates from vendor's website.
Cisco Hosted Collaboration Mediation Fulfillment - update to 12.5.1 SU2