Description

A vulnerability in the FTP server of the Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to log in to the FTP server of the device without a valid password. The attacker does need to have a valid username. The vulnerability is due to incorrect FTP user credential validation. An attacker could exploit this vulnerability by using FTP to connect to the management IP address of the targeted device. A successful exploit could allow the attacker to log in to the FTP server of the Cisco WSA without having a valid password. This vulnerability affects Cisco AsyncOS for WSA Software on both virtual and hardware appliances that are running any release of Cisco AsyncOS 10.5.1 for WSA Software. The device is vulnerable only if FTP is enabled on the management interface. FTP is disabled by default. Cisco Bug IDs: CSCvf74281.

Severity

 

CVSS Version 3.x CVSS Version 2.0

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score:  5.6 MEDIUM

Vector:  CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

CVSS 2.0 Severity and Metrics:

NIST: NVD

Base Score:  6.8 MEDIUM

Vector:  (AV:N/AC:M/Au:N/C:P/I:P/A:P)

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
http://www.securityfocus.com/bid/103407	Third Party Advisory  VDB Entry
http://www.securitytracker.com/id/1040464	Third Party Advisory  VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180307-wsa	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-287	Improper Authentication	NIST   Cisco Systems, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

CVE Modified by Cisco Systems, Inc. 10/09/2019 7:31:12 PM

Action	Type	Old Value	New Value
Added	CWE		Cisco Systems, Inc. CWE-287

CWE Remap by NIST 10/02/2019 8:03:26 PM

Action	Type	Old Value	New Value
Changed	CWE	CWE-287 CWE-254	CWE-287

Initial Analysis by NIST 3/27/2018 7:59:53 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		OR *cpe:2.3:o:cisco:asyncos:10.5.1-296:*:*:*:*:*:*:*
Added	CVSS V2		(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Added	CVSS V3		AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Added	CWE		CWE-254
Added	CWE		CWE-287
Changed	Reference Type	http://www.securityfocus.com/bid/103407 No Types Assigned	http://www.securityfocus.com/bid/103407 Third Party Advisory, VDB Entry
Changed	Reference Type	http://www.securitytracker.com/id/1040464 No Types Assigned	http://www.securitytracker.com/id/1040464 Third Party Advisory, VDB Entry
Changed	Reference Type	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180307-wsa No Types Assigned	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180307-wsa Vendor Advisory

CVE Modified by Cisco Systems, Inc. 3/15/2018 9:29:10 PM

Action	Type	Old Value	New Value
Added	Reference		http://www.securityfocus.com/bid/103407 [No Types Assigned]

CVE Modified by Cisco Systems, Inc. 3/08/2018 9:29:01 PM

Action	Type	Old Value	New Value
Added	Reference		http://www.securitytracker.com/id/1040464 [No Types Assigned]