ESB-2017.2395 - [Cisco] Cisco Wide Area Application Services: Denial of service - Remote/unauthenticated 2017-09-21

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2395
       Cisco Wide Area Application Services HTTP Application Optimi
                  zation Denial of Service Vulnerability
                             21 September 2017

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Cisco Wide Area Application Services
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-12250  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170920-waas

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Cisco Security Advisory

Cisco Wide Area Application Services HTTP Application Optimization Denial of 
Service Vulnerability

Medium

Advisory ID: cisco-sa-20170920-waas

First Published: 2017 September 20 16:00 GMT

Version 1.0: Final

Workarounds: No workarounds available

Cisco Bug IDs:

CSCvc63048

CVSS Score:

Base 5.8

Base 5.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L/E:X/RL:X/RC:X

CVE-2017-12250

CWE-399

Summary

A vulnerability in the HTTP web interface for Cisco Wide Area Application 
Services (WAAS) could allow an unauthenticated, remote attacker to cause an 
HTTP Application Optimization (AO) related process to restart, causing a 
partial denial of service (DoS) condition.

The vulnerability is due to lack of input validation of user-supplied input 
parameters within an HTTP request. An attacker could exploit this 
vulnerability by sending a crafted HTTP request through the targeted device. 
An exploit could allow the attacker to cause a DoS condition due to a process
unexpectedly restarting. The WAAS could drop traffic during the brief time the
process is restarting.

There are no workarounds that address this vulnerability.

This advisory is available at the following link:

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170920-waas

Affected Products

Vulnerable Products

This vulnerability affects Cisco Wide Area Application Services (WAAS). For 
information about affected software releases, consult the Cisco bug ID(s) at 
the top of this advisory.

Products Confirmed Not Vulnerable

No other Cisco products are currently known to be affected by this 
vulnerability.

Workarounds

There are no workarounds that address this vulnerability.

Fixed Software

For information about fixed software releases, consult the Cisco bug ID(s) at
the top of this advisory.

When considering software upgrades, customers are advised to regularly consult
the advisories for Cisco products, which are available from the Cisco Security
Advisories and Alerts page, to determine exposure and a complete upgrade 
solution.

In all cases, customers should ensure that the devices to be upgraded contain
sufficient memory and confirm that current hardware and software 
configurations will continue to be supported properly by the new release. If 
the information is not clear, customers are advised to contact the Cisco 
Technical Assistance Center (TAC) or their contracted maintenance providers.

Exploitation and Public Announcements

The Cisco Product Security Incident Response Team (PSIRT) is not aware of any
public announcements or malicious use of the vulnerability that is described 
in this advisory.

Source

This vulnerability was found during internal security testing.

URL

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170920-waas

Revision History

Version	Description		Section		Status	Date

1.0	Initial public release.	--		Final	2017-September-20

LEGAL DISCLAIMER

THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF 
GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS
LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO 
CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.

A standalone copy or paraphrase of the text of this document that omits the 
distribution URL is an uncontrolled copy and may lack important information or
contain factual errors. The information in this document is intended for end 
users of Cisco products.

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