Information disclosure in Cisco Secure Access Control Server

1) XXE attack

EUVDB-ID: #VU14692

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0414

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

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to obtain potentially sensitive information.

The vulnerability exists in the web-based UI of Cisco Secure Access Control Server due to improper handling of XML External Entities (XXEs) when parsing an XML file. A remote attacker can trick the administrator of an affected system into importing a specially crafted XML file and gain access to potentially sensitive information.

Mitigation

Update to version 5.8(10).

Vulnerable software versions

Cisco Secure Access Control Server: 5.8.1.4

CPE2.3

• cpe:2.3:a:cisco_systems:cisco_secure_access_control_server:5.8.1.4:*:*:*:*:*:*:*

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180905-acsxxe

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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