Cisco Security Advisory: Cisco IOS Software SSL VPN Denial of Service Vulnerability

Andrew Latham lathama at gmail.com
Wed Mar 26 16:58:44 UTC 2014


Robert

Perfectly normal, almost an announce list for issues like this.

On Wed, Mar 26, 2014 at 12:45 PM, rwebb at ropeguru.com <rwebb at ropeguru.com> wrote:
>
> Is this normal for the list to diretly get Cisco security advisories or
> something new. First time I have seen these.
>
> Robert
>
>
> On Wed, 26 Mar 2014 12:10:00 -0400
>  Cisco Systems Product Security Incident Response Team <psirt at cisco.com>
> wrote:
>>
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA1
>>
>> Cisco IOS Software SSL VPN Denial of Service Vulnerability
>>
>> Advisory ID: cisco-sa-20140326-ios-sslvpn
>>
>> Revision 1.0
>>
>> For Public Release 2014 March 26 16:00  UTC (GMT)
>>
>> Summary
>> =======
>>
>> A vulnerability in the Secure Sockets Layer (SSL) VPN subsystem of Cisco
>> IOS Software could allow an unauthenticated, remote attacker to cause a
>> denial of service (DoS) condition.
>>
>> The vulnerability is due to a failure to process certain types of HTTP
>> requests. To exploit the vulnerability, an attacker could submit crafted
>> requests designed to consume memory to an affected device. An exploit could
>> allow the attacker to consume and fragment memory on the affected device.
>> This may cause reduced performance, a failure of certain processes, or a
>> restart of the affected device.
>>
>> Cisco has released free software updates that address this vulnerability.
>> There are no workarounds to mitigate this vulnerability.
>>
>> This advisory is available at the following link:
>>
>> http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140326-ios-sslvpn
>>
>> Note: The March 26, 2014, Cisco IOS Software Security Advisory bundled
>> publication includes six Cisco Security Advisories. All advisories address
>> vulnerabilities in Cisco IOS Software. Each Cisco IOS Software Security
>> Advisory lists the Cisco IOS Software releases that correct the
>> vulnerability or vulnerabilities detailed in the advisory as well as the
>> Cisco IOS Software releases that correct all Cisco IOS Software
>> vulnerabilities in the March 2014 bundled publication.
>>
>> Individual publication links are in Cisco Event Response: Semiannual Cisco
>> IOS Software Security Advisory Bundled Publication at the following link:
>>
>> http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_mar14.html
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>>
>
>



-- 
~ Andrew "lathama" Latham lathama at gmail.com http://lathama.net ~



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