ESB-2017.2497 - [Cisco] Cisco Wide Area Application Services (WAAS): Denial of service - Remote/unauthenticated 2017-10-05

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2497
   Cisco Wide Area Application Services Denial-of-Service Vulnerability
                              5 October 2017

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

Product:           Cisco Wide Area Application Services (WAAS)
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-12267 CVE-2017-12256 

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171004-waas
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171004-waas1

Comment: This bulletin contains two (2) security advisories.

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Cisco Wide Area Application Services Denial-of-Service Vulnerability

Medium

Advisory ID:
cisco-sa-20171004-waas

First Published:
2017 October 4 16:00 GMT

Version 1.0:
Final

Workarounds:
No workarounds available

Cisco Bug IDs:
CSCve82472

CVSS Score:
Base 6.5

CVE-2017-12256
CWE-399

Summary

A vulnerability in the Akamai Connect feature of Cisco Wide Area Application 
Services (WAAS) Appliances could allow an unauthenticated, remote attacker to
cause a denial-of-service (DoS) condition on an affected device.

The vulnerability is due to certain file-handling inefficiencies of the 
affected system. An attacker could exploit this vulnerability by directing 
client systems to access a corrupted file that the client systems cannot 
decompress correctly. A successful exploit could allow the attacker to cause 
the affected device to crash or hang unexpectedly and result in a DoS 
condition that may require manual intervention to regain normal operating 
conditions.

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-20171004-waas

Affected Products

Vulnerable Products

This vulnerability affects Cisco Wide Area Application Services (WAAS) 
Appliances. 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 internally.

URL

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171004-waas

Revision History

Version Description 		Section Status 	Date
1.0 Initial public release. 	-	Final 	2017-October-04

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Cisco Wide Area Application Services ICA Accelerator Denial of Service 
Vulnerability

Medium

Advisory ID:
cisco-sa-20171004-waas1

First Published:
2017 October 4 16:00 GMT

Version 1.0:
Final

Workarounds:
No workarounds available

Cisco Bug IDs:
CSCve74457

CVSS Score:
Base 5.8

CVE-2017-12267
CWE-119

Summary

A vulnerability in the Independent Computing Architecture (ICA) accelerator 
feature for the Cisco Wide Area Application Services (WAAS) could allow an 
unauthenticated, remote attacker to cause an ICA application 
optimization-related process to restart, resulting in a partial denial of 
service (DoS) condition.

The vulnerability is due to improperly aborting a connection when an 
unexpected protocol packet is received. An attacker could exploit this 
vulnerability by sending a crafted ICA traffic through the targeted device. A
successful exploit could allow the attacker to cause a DoS condition that is 
due to a process unexpectedly restarting. The Cisco WAAS could drop ICA 
traffic while 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-20171004-waas1

Affected Products

Vulnerable Products

This vulnerability affects Cisco Wide Area Application Services (WAAS) and 
Cisco Virtual Wide Area Application Services (vWAAS) are affected. 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-20171004-waas1

Revision History

Version Description 		Section Status 	Date
1.0 Initial public release. 	-	Final 	2017-October-04

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