Advisory ID: cisco-sa-20090923-tlsRevision 1.1
For Public Release 2009 September 23 16:00 UTC (GMT)
Cisco IOS® Software contains a vulnerability
that could allow an attacker to cause a Cisco IOS device to reload by remotely
sending a crafted encryption packet.
Cisco has released free software updates that address this
vulnerability.
This advisory is posted at
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20090923-tls.
Note: The September 23, 2009, Cisco IOS Security Advisory bundled
publication includes eleven Security Advisories. Ten of the advisories address
vulnerabilities in Cisco IOS Software, and one advisory addresses a
vulnerability in Cisco Unified Communications Manager. Each advisory lists the
releases that correct the vulnerability or vulnerabilities detailed in the
advisory.
Individual publication links are in "Cisco Event Response:
Semiannual Cisco IOS Software Advisory Bundled Publication" at the following
link:
http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_
sep09.html
Devices running affected versions of Cisco IOS Software are susceptible
if configured with any of the following features:
-
Secure Socket Layer (SSL) Virtual Private Network (VPN)
-
Secure Shell (SSH)
-
Internet Key Exchange (IKE) Encrypted Nonces
Note: Other SSL/HTTPS related features than WebVPN and SSL VPN are not
affected by this vulnerability.
To determine whether SSLVPN is enabled on a device, log in to the
device and issue the command-line interface (CLI) command
show running-config | include
webvpn
. If the device returns any output then SSLVPN is
configured and the device may be vulnerable. Vulnerable configurations vary
depending on whether the device is supporting Cisco IOS WebVPN (introduced in
Release 12.3(14)T) or Cisco IOS SSLVPNs (introduced in Release 12.4(6)T). The
following methods describe how to confirm if the device is vulnerable:
If the output from "show running-config | include
webvpn" contains "webvpn enable" then the device is
configured with the original Cisco IOS WebVPN. The only way to determine
whether the device is vulnerable is to examine the output of "show
running-config" to confirm that webvpn is enabled via the command
"webvpn enable" and that a "ssl trustpoint"
has been configured. The following example shows a vulnerable device configured
with Cisco IOS WebVPN:
webvpn enable
!
webvpn
ssl trustpoint TP-self-signed-29742012
If the output from "show running-config | include webvpn" contains
"webvpn gateway <word>" then the device is supporting the Cisco IOS
SSLVPN feature. A device is vulnerable if it has the "inservice" command in at
least one of the "webvpn gateway" sections. The following example shows a
vulnerable device configured with Cisco IOS SSLVPN:
Router# show running | section webvpn
webvpn gateway Gateway
ip address 10.1.1.1 port 443
ssl trustpoint Gateway-TP
inservice
!
Router#
A device that supports the Cisco IOS SSLVPN is not vulnerable if it has
no "webvpn gateways" configured or all the configured "webvpn
gateways" contain the "no inservice" webvpn gateway
command.
To determine if SSH is enabled use the show ip ssh
command, as shown in the following example:
Router#show ip ssh
SSH Enabled - version 1.99
Authentication timeout: 120 secs; Authentication retries: 3
Minimum expected Diffie Hellman key size : 1024 bits
To determine if the IKE encrypted nonces feature is enabled, use the
show running-config | include rsa-encr command as follows:
Router#show running-config | inc rsa-encr
authentication rsa-encr
To determine the Cisco IOS Software release that is running on a Cisco
product, administrators can log in to the device and issue the show version
command to display the system banner. The system banner confirms that the
device is running Cisco IOS Software by displaying text similar to "Cisco
Internetwork Operating System Software" or "Cisco IOS Software." The image name
displays in parentheses, followed by "Version" and the Cisco IOS Software
release name. Other Cisco devices do not have the show version command or may
provide different output.
The following example identifies a Cisco product that is running Cisco
IOS Software Release 12.3(26) with an installed image name of
C2500-IS-L:
Router#show version
Cisco Internetwork Operating System Software
IOS (tm) 2500 Software (C2500-IS-L), Version 12.3(26), RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by cisco Systems, Inc.
Compiled Mon 17-Mar-08 14:39 by dchih
!--- output truncated
The following example identifies a Cisco product that is running Cisco
IOS Software Release 12.4(20)T with an installed image name of
C1841-ADVENTERPRISEK9-M:
Router#show version
Cisco IOS Software, 1841 Software (C1841-ADVENTERPRISEK9-M), Version 12.4(20)T, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Thu 10-Jul-08 20:25 by prod_rel_team
!--- output truncated
Additional information about Cisco IOS Software release naming
conventions is available in "White Paper: Cisco IOS Reference Guide" at the
following link: http://www.cisco.com/warp/public/620/1.html.
The Cisco ASA 5500 Series Adaptive Security Appliances are not affected
by this vulnerability.
Cisco IOS XR Software is not affected by this
vulnerability.
No other Cisco products are currently known to be affected
by this vulnerability.
A Cisco IOS device that is configured for SSLVPN or SSH may reload when
it receives a specially crafted TCP packet on TCP port 443 (SSLVPN) or TCP port
22 (SSH). Completion of the three-way handshake to the associated TCP port
number of these features is required for the vulnerability to be successfully
exploited; however, authentication is not required. A Cisco IOS device that is
configured for IKE encrypted nonces may reload when it receives a specially
crafted UDP packet on port 500 or 4500 (if configured for NAT Traversal
(NAT-T)).
This vulnerability is documented in Cisco bug ID
CSCsq24002
(
registered customers only)
and has been assigned
the Common Vulnerabilities and Exposures (CVE) identifier CVE-2009-2871.
Cisco has provided scores for the vulnerability in this advisory based
on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this
Security Advisory is done in accordance with CVSS version 2.0.
CVSS is a standards-based scoring method that conveys
vulnerability severity and helps determine urgency and priority of response.
Cisco has provided a base and temporal score. Customers can
then compute environmental scores to assist in determining the impact of the
vulnerability in individual networks.
Cisco has provided an FAQ to answer additional questions
regarding CVSS at
http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html .
Cisco has also provided a CVSS calculator to help compute
the environmental impact for individual networks at
http://intellishield.cisco.com/security/alertmanager/cvss .
|
CSCsq24002 - Crafted Encrypted packet may cause device
reload
Calculate the environmental score of
CSCsq24002
|
|
CVSS Base Score - 7.8
|
|
Access Vector
|
Access Complexity
|
Authentication
|
Confidentiality Impact
|
Integrity Impact
|
Availability Impact
|
|
Network
|
Low
|
None
|
None
|
None
|
Complete
|
|
CVSS Temporal Score - 6.4
|
|
Exploitability
|
Remediation Level
|
Report Confidence
|
|
Functional
|
Official-Fix
|
Confirmed
|
Successful exploitation of the vulnerability described in this document
may result in a reload of the device. The issue could be repeatedly exploited
to cause an extended DoS condition.
When considering software upgrades, also consult
http://www.cisco.com/go/psirt
and any subsequent advisories to determine exposure and a complete upgrade
solution.
In all cases, customers should exercise caution to be
certain the devices to be upgraded contain sufficient memory and that current
hardware and software configurations will continue to be supported properly by
the new release. If the information is not clear, contact the Cisco Technical
Assistance Center (TAC) or your contracted maintenance provider for assistance.
Each row of the Cisco IOS software table (below) names a
Cisco IOS release train. If a given release train is vulnerable, then the
earliest possible releases that contain the fix (along with the anticipated
date of availability for each, if applicable) are listed in the "First Fixed
Release" column of the table. The "Recommended Release" column indicates the
releases which have fixes for all the published vulnerabilities at the time of
this Advisory. A device running a release in the given train that is earlier
than the release in a specific column (less than the First Fixed Release) is
known to be vulnerable. Cisco recommends upgrading to a release equal to or
later than the release in the "Recommended Releases" column of the table.
|
Major Release
|
Availability of Repaired Releases
|
|
Affected 12.0-Based Releases
|
First Fixed Release
|
Recommended Release
|
|
There are no affected 12.0 based releases.
|
|
Affected 12.1-Based Releases
|
First Fixed Release
|
Recommended Release
|
|
There are no affected 12.1 based releases.
|
|
Affected 12.2-Based Releases
|
First Fixed Release
|
Recommended Release
|
|
12.2
|
Not Vulnerable
|
|
|
12.2B
|
Not Vulnerable
|
|
|
12.2BC
|
Not Vulnerable
|
|
|
12.2BW
|
Not Vulnerable
|
|
|
12.2BX
|
Not Vulnerable
|
|
|
12.2BY
|
Not Vulnerable
|
|
|
12.2BZ
|
Not Vulnerable
|
|
|
12.2CX
|
Not Vulnerable
|
|
|
12.2CY
|
Not Vulnerable
|
|
|
12.2CZ
|
Not Vulnerable
|
|
|
12.2DA
|
Not Vulnerable
|
|
|
12.2DD
|
Not Vulnerable
|
|
|
12.2DX
|
Not Vulnerable
|
|
|
12.2EW
|
Not Vulnerable
|
|
|
12.2EWA
|
Not Vulnerable
|
|
|
12.2EX
|
Not Vulnerable
|
|
|
12.2EY
|
Not Vulnerable
|
|
|
12.2EZ
|
Not Vulnerable
|
|
|
12.2FX
|
Not Vulnerable
|
|
|
12.2FY
|
Not Vulnerable
|
|
|
12.2FZ
|
Not Vulnerable
|
|
|
12.2IRA
|
Not Vulnerable
|
|
|
12.2IRB
|
Not Vulnerable
|
|
|
12.2IRC
|
Not Vulnerable
|
|
|
12.2IXA
|
Not Vulnerable
|
|
|
12.2IXB
|
Not Vulnerable
|
|
|
12.2IXC
|
Not Vulnerable
|
|
|
12.2IXD
|
Not Vulnerable
|
|
|
12.2IXE
|
Not Vulnerable
|
|
|
12.2IXF
|
Not Vulnerable
|
|
|
12.2IXG
|
Not Vulnerable
|
|
|
12.2IXH
|
Not Vulnerable
|
|
|
12.2JA
|
Not Vulnerable
|
|
|
12.2JK
|
Not Vulnerable
|
|
|
12.2MB
|
Not Vulnerable
|
|
|
12.2MC
|
Not Vulnerable
|
|
|
12.2S
|
Not Vulnerable
|
|
|
12.2SB
|
Not Vulnerable
|
|
|
12.2SBC
|
Not Vulnerable
|
|
|
12.2SCA
|
Not Vulnerable
|
|
|
12.2SCB
|
Not Vulnerable
|
|
|
12.2SE
|
Not Vulnerable
|
|
|
12.2SEA
|
Not Vulnerable
|
|
|
12.2SEB
|
Not Vulnerable
|
|
|
12.2SEC
|
Not Vulnerable
|
|
|
12.2SED
|
Not Vulnerable
|
|
|
12.2SEE
|
Not Vulnerable
|
|
|
12.2SEF
|
Not Vulnerable
|
|
|
12.2SEG
|
Not Vulnerable
|
|
|
12.2SG
|
Not Vulnerable
|
|
|
12.2SGA
|
Not Vulnerable
|
|
|
12.2SL
|
Not Vulnerable
|
|
|
12.2SM
|
Not Vulnerable
|
|
|
12.2SO
|
Not Vulnerable
|
|
|
12.2SQ
|
Not Vulnerable
|
|
|
12.2SRA
|
Not Vulnerable
|
|
|
12.2SRB
|
Not Vulnerable
|
|
|
12.2SRC
|
Not Vulnerable
|
|
|
12.2SRD
|
Not Vulnerable
|
|
|
12.2STE
|
Not Vulnerable
|
|
|
12.2SU
|
Not Vulnerable
|
|
|
12.2SV
|
Not Vulnerable
|
|
|
12.2SVA
|
Not Vulnerable
|
|
|
12.2SVC
|
Not Vulnerable
|
|
|
12.2SVD
|
Not Vulnerable
|
|
|
12.2SVE
|
Not Vulnerable
|
|
|
12.2SW
|
Not Vulnerable
|
|
|
12.2SX
|
Not Vulnerable
|
|
|
12.2SXA
|
Not Vulnerable
|
|
|
12.2SXB
|
Not Vulnerable
|
|
|
12.2SXD
|
Not Vulnerable
|
|
|
12.2SXE
|
Not Vulnerable
|
|
|
12.2SXF
|
Not Vulnerable
|
|
|
12.2SXH
|
Not Vulnerable
|
|
|
12.2SXI
|
Not Vulnerable
|
|
|
12.2SY
|
Not Vulnerable
|
|
|
12.2SZ
|
Not Vulnerable
|
|
|
12.2T
|
Not Vulnerable
|
|
|
12.2TPC
|
Not Vulnerable
|
|
|
12.2XA
|
Not Vulnerable
|
|
|
12.2XB
|
Not Vulnerable
|
|
|
12.2XC
|
Not Vulnerable
|
|
|
12.2XD
|
Not Vulnerable
|
|
|
12.2XE
|
Not Vulnerable
|
|
|
12.2XF
|
Not Vulnerable
|
|
|
12.2XG
|
Not Vulnerable
|
|
|
12.2XH
|
Not Vulnerable
|
|
|
12.2XI
|
Not Vulnerable
|
|
|
12.2XJ
|
Not Vulnerable
|
|
|
12.2XK
|
Not Vulnerable
|
|
|
12.2XL
|
Not Vulnerable
|
|
|
12.2XM
|
Not Vulnerable
|
|
|
12.2XNA
|
Please see Cisco IOS-XE Software
Availability
|
|
|
12.2XNB
|
Please see Cisco IOS-XE Software
Availability
|
|
|
12.2XNC
|
Please see Cisco IOS-XE Software
Availability
|
|
|
12.2XND
|
Please see Cisco IOS-XE Software
Availability
|
|
|
12.2XO
|
Not Vulnerable
|
|
|
12.2XQ
|
Not Vulnerable
|
|
|
12.2XR
|
Not Vulnerable
|
|
|
12.2XS
|
Not Vulnerable
|
|
|
12.2XT
|
Not Vulnerable
|
|
|
12.2XU
|
Not Vulnerable
|
|
|
12.2XV
|
Not Vulnerable
|
|
|
12.2XW
|
Not Vulnerable
|
|
|
12.2YA
|
Not Vulnerable
|
|
|
12.2YB
|
Not Vulnerable
|
|
|
12.2YC
|
Not Vulnerable
|
|
|
12.2YD
|
Not Vulnerable
|
|
|
12.2YE
|
Not Vulnerable
|
|
|
12.2YF
|
Not Vulnerable
|
|
|
12.2YG
|
Not Vulnerable
|
|
|
12.2YH
|
Not Vulnerable
|
|
|
12.2YJ
|
Not Vulnerable
|
|
|
12.2YK
|
Not Vulnerable
|
|
|
12.2YL
|
Not Vulnerable
|
|
|
12.2YM
|
Not Vulnerable
|
|
|
12.2YN
|
Not Vulnerable
|
|
|
12.2YO
|
Not Vulnerable
|
|
|
12.2YP
|
Not Vulnerable
|
|
|
12.2YQ
|
Not Vulnerable
|
|
|
12.2YR
|
Not Vulnerable
|
|
|
12.2YS
|
Not Vulnerable
|
|
|
12.2YT
|
Not Vulnerable
|
|
|
12.2YU
|
Not Vulnerable
|
|
|
12.2YV
|
Not Vulnerable
|
|
|
12.2YW
|
Not Vulnerable
|
|
|
12.2YX
|
Not Vulnerable
|
|
|
12.2YY
|
Not Vulnerable
|
|
|
12.2YZ
|
Not Vulnerable
|
|
|
12.2ZA
|
Not Vulnerable
|
|
|
12.2ZB
|
Not Vulnerable
|
|
|
12.2ZC
|
Not Vulnerable
|
|
|
12.2ZD
|
Not Vulnerable
|
|
|
12.2ZE
|
Not Vulnerable
|
|
|
12.2ZF
|
Not Vulnerable
|
|
|
12.2ZG
|
Not Vulnerable
|
|
|
12.2ZH
|
Not Vulnerable
|
|
|
12.2ZJ
|
Not Vulnerable
|
|
|
12.2ZL
|
Not Vulnerable
|
|
|
12.2ZP
|
Not Vulnerable
|
|
|
12.2ZU
|
Not Vulnerable
|
|
|
12.2ZX
|
Not Vulnerable
|
|
|
12.2ZY
|
Not Vulnerable
|
|
|
12.2ZYA
|
Not Vulnerable
|
|
|
Affected 12.3-Based Releases
|
First Fixed Release
|
Recommended Release
|
|
There are no affected 12.3 based releases.
|
|
Affected 12.4-Based Releases
|
First Fixed Release
|
Recommended Release
|
|
12.4
|
Not Vulnerable
|
|
|
12.4GC
|
Not Vulnerable
|
|
|
12.4JA
|
Not Vulnerable
|
|
|
12.4JDA
|
Not Vulnerable
|
|
|
12.4JDC
|
Not Vulnerable
|
|
|
12.4JDD
|
Not Vulnerable
|
|
|
12.4JK
|
Not Vulnerable
|
|
|
12.4JL
|
Not Vulnerable
|
|
|
12.4JMA
|
Not Vulnerable
|
|
|
12.4JMB
|
Not Vulnerable
|
|
|
12.4JX
|
Not Vulnerable
|
|
|
12.4MD
|
12.4(15)MD3
|
12.4(15)MD3
|
|
12.4MDA
|
Not Vulnerable
|
|
|
12.4MR
|
12.4(19)MR3
|
12.4(19)MR3
|
|
12.4SW
|
Vulnerable; first fixed in 12.4T
|
12.4(15)T10
12.4(20)T4
|
|
12.4T
|
12.4(15)T10
12.4(22)T2
12.4(20)T3
12.4(24)T |
12.4(15)T10
12.4(20)T4
|
|
12.4XA
|
Not Vulnerable
|
|
|
12.4XB
|
Not Vulnerable
|
|
|
12.4XC
|
Not Vulnerable
|
|
|
12.4XD
|
Not Vulnerable
|
|
|
12.4XE
|
Not Vulnerable
|
|
|
12.4XF
|
Vulnerable; first fixed in 12.4T
|
12.4(15)T10
12.4(20)T4
|
|
12.4XG
|
Not Vulnerable
|
|
|
12.4XJ
|
Vulnerable; first fixed in 12.4T
|
12.4(15)T10
12.4(20)T4
|
|
12.4XK
|
Vulnerable; first fixed in 12.4T
|
12.4(15)T10
12.4(20)T4
|
|
12.4XL
|
Not Vulnerable
|
|
|
12.4XM
|
Not Vulnerable
|
|
|
12.4XN
|
Not Vulnerable
|
|
|
12.4XP
|
Not Vulnerable
|
|
|
12.4XQ
|
12.4(15)XQ3
|
12.4(15)T10
|
|
12.4XR
|
12.4(15)XR5
|
12.4(15)XR7
12.4(22)XR
|
|
12.4XT
|
Not Vulnerable
|
|
|
12.4XV
|
Vulnerable; Contact your support organization per the
instructions in Obtaining Fixed Software section of
this advisory
|
|
|
12.4XW
|
Vulnerable; first fixed in 12.4T
|
12.4(15)T10
12.4(20)T4
|
|
12.4XY
|
Vulnerable; first fixed in 12.4T
|
12.4(15)T10
12.4(20)T4
|
|
12.4XZ
|
Vulnerable; first fixed in 12.4T
|
12.4(15)T10
12.4(20)T4
|
|
12.4YA
|
Vulnerable; first fixed in 12.4T
|
12.4(15)T10
12.4(20)T4
|
|
12.4YB
|
Not Vulnerable
|
|
|
12.4YD
|
Not Vulnerable
|
|
|
12.4YE
|
Not Vulnerable
|
|
Note: No Cisco IOS Software Modularity releases are affected by this
vulnerability.
Cisco IOS XE Software
|
IOS XE Release
|
First Fixed Release
|
|
2.1.x
|
Not Vulnerable
|
|
2.2.x
|
Not Vulnerable
|
|
2.3.x
|
2.3.2
|
|
2.4.x
|
Not Vulnerable
|
There are no available workarounds other than disabling the affected
features and protecting SSH access with the use of VTY access control
lists.
Use the no webvpn enable command to disable SSL VPN
use.
For Cisco IOS the SSH server can be disabled by applying the command
crypto key zeroize rsa while in configuration mode.
The SSH server is enabled automatically upon generating an RSA key pair.
Zeroing the RSA keys is the only way to completely disable the SSH server.
Access to the SSH server on Cisco IOS Software may also be
disabled by removing SSH as a valid transport protocol. This action can be done
by reapplying the transport input command with 'ssh' removed from the list of
permitted transports on vty lines while in configuration mode. For example:
line vty 0 4
transport input telnet
end
If SSH server functionality is desired, access to the server can be
restricted to specific source IP addresses or blocked entirely through the use
of Access Control Lists (ACLs) on the vty lines as shown in the following URL:
http://www.cisco.com/en/US/docs/switches/lan/catalyst2950/software/release/12.1_9_ea1/configuration/guide/swacl.html#xtocid14
More information on configuring ACLs can be found on
Cisco's public website:
http://www.cisco.com/en/US/products/sw/secursw/ps1018/products_tech_note09186a00800a5b9a.shtml
The following is an example of a vty access-list:
access-list 2 permit 10.1.1.0 0.0.0.255
access-list 2 deny any
line vty 0 4
access-class 2 in
In the previous example, only the 10.1.1.0/24 network is allowed to SSH
to the Cisco IOS device.
To disable IKE encrypted nonces use the no authentication
rsa-encr command under an ISAKMP policy, as shown in the following
example:
crypto isakmp policy
no authentication rsa-encr
Cisco has released free software updates that address this
vulnerability. Prior to deploying software, customers should consult their
maintenance provider or check the software for feature set compatibility and
known issues specific to their environment.
Customers may only install and expect support for the
feature sets they have purchased. By installing, downloading, accessing or
otherwise using such software upgrades, customers agree to be bound by the
terms of Cisco's software license terms found at
http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html,
or as otherwise set forth at Cisco.com Downloads at
http://www.cisco.com/public/sw-center/sw-usingswc.shtml.
Do not contact psirt@cisco.com or security-alert@cisco.com
for software upgrades.
Customers with contracts should obtain upgraded software through their
regular update channels. For most customers, this means that upgrades should be
obtained through the Software Center on Cisco's worldwide website at
http://www.cisco.com.
Customers whose Cisco products are provided or maintained through prior
or existing agreements with third-party support organizations, such as Cisco
Partners, authorized resellers, or service providers should contact that
support organization for guidance and assistance with the appropriate course of
action in regards to this advisory.
The effectiveness of any workaround or fix is dependent on
specific customer situations, such as product mix, network topology, traffic
behavior, and organizational mission. Due to the variety of affected products
and releases, customers should consult with their service provider or support
organization to ensure any applied workaround or fix is the most appropriate
for use in the intended network before it is deployed.
Customers who purchase direct from Cisco but do not hold a Cisco
service contract, and customers who purchase through third-party vendors but
are unsuccessful in obtaining fixed software through their point of sale should
acquire upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC
contacts are as follows.
-
+1 800 553 2447 (toll free from within North America)
-
+1 408 526 7209 (toll call from anywhere in the world)
-
e-mail: tac@cisco.com
Customers should have their product serial number available and be
prepared to give the URL of this notice as evidence of entitlement to a free
upgrade. Free upgrades for non-contract customers must be requested through the
TAC.
Refer to
http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html
for additional TAC contact information, including localized telephone numbers,
and instructions and e-mail addresses for use in various languages.
The Cisco PSIRT is not aware of any public announcements or malicious
use of the vulnerability described in this advisory.
This vulnerability was found during internal testing.
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 stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors.
This advisory is posted on Cisco's worldwide website at :
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20090923-tls
In addition to worldwide web posting, a text version of
this notice is clear-signed with the Cisco PSIRT PGP key and is posted to the
following e-mail and Usenet news recipients.
-
cust-security-announce@cisco.com
-
first-bulletins@lists.first.org
-
bugtraq@securityfocus.com
-
vulnwatch@vulnwatch.org
-
cisco@spot.colorado.edu
-
cisco-nsp@puck.nether.net
-
full-disclosure@lists.grok.org.uk
-
comp.dcom.sys.cisco@newsgate.cisco.com
Future updates of this advisory, if any, will be placed on Cisco's
worldwide website, but may or may not be actively announced on mailing lists or
newsgroups. Users concerned about this problem are encouraged to check the
above URL for any updates.
|
Revision 1.0
|
2009-September-23
|
Initial public release
|
|
