Security restrictions bypass in Cisco Web Security Appliance



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-0087
CWE-ID CWE-284
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Cisco Web Security Appliance
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor Cisco Systems, Inc

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Security restrictions bypass

EUVDB-ID: #VU10896

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-0087

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists in the FTP server due to incorrect FTP user credential validation. A remote attacker can use FTP to connect to the management IP address and log in to the FTP server of the Cisco WSA without having a valid password.

Mitigation

Update to version 10.5.2-034.

Vulnerable software versions

Cisco Web Security Appliance: 10.5.2 034

CPE2.3 External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180307-wsa


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker 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.



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