Cisco ASA WebVPN CIFS Share Enumeration DoS (CSCuj83344)

medium Nessus Plugin ID 77411
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Synopsis

The remote device is missing a vendor-supplied security patch.

Description

According to its banner, the version of the remote Cisco ASA device is affected by a denial of service vulnerability in the WebVPN CIFS (Common Internet File System) access function due to missing bounds checks on received responses when enumerating large amounts of shares on a CIFS server. A remote, authenticated attacker can exploit this issue by attempting to list the shares of a CIFS server with a large amount of shares.

Solution

Apply the relevant patch referenced in Cisco bug ID CSCuj83344.

See Also

http://www.nessus.org/u?66327426

https://tools.cisco.com/security/center/viewAlert.x?alertId=34921

Plugin Details

Severity: Medium

ID: 77411

File Name: cisco-sn-CSCuj83344-asa.nasl

Version: 1.7

Type: local

Family: CISCO

Published: 8/28/2014

Updated: 11/15/2018

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: AV:N/AC:L/Au:S/C:N/I:N/A:C

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:cisco:adaptive_security_appliance_software

Required KB Items: Host/Cisco/ASA, Host/Cisco/ASA/model

Exploit Ease: No known exploits are available

Patch Publication Date: 7/22/2014

Vulnerability Publication Date: 7/11/2014

Reference Information

CVE: CVE-2013-6691

BID: 68517

CISCO-BUG-ID: CSCuj83344