Cisco Security Advisory

Cisco ACE Application Control Engine Device Manager and Application Networking Manager Vulnerabilities

Advisory ID: cisco-sa-20090225-anm

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20090225-anm

Revision 1.0

For Public Release 2009 February 25 16:00  UTC (GMT)


Summary

Multiple vulnerabilities exist in the Cisco Application Networking Manager (ANM) and Cisco Application Control Engine (ACE) Device Manager applications. These vulnerabilities are independent of each other. Successful exploitation of these vulnerabilities may result in unauthorized system or host operating system access.

This security advisory identifies the following vulnerabilities:

  • ACE Device Manager and ANM invalid directory permissions vulnerability
  • ANM default user credentials vulnerability
  • ANM MySQL default credentials vulnerability
  • ANM Java agent privilege escalation

Cisco has released free software updates that address these vulnerabilities. A workaround that mitigates one of the issues is available.

This advisory is posted at http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20090225-anm.

Note: This advisory is being released simultaneously with a multiple vulnerabilities advisory impacting the ACE appliance and module software, which is posted at

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20090225-ace.

Affected Products

Vulnerable Products

The following are the products and versions affected by each vulnerability described within this advisory.

Vulnerability

Product Affected

Version Affected

Invalid Directory Permissions

ACE Device Manager

All versions prior to A3(2.1)

Invalid Directory Permissions

ANM

All versions prior to ANM 2.0

Default User Credentials

ANM

All versions prior to ANM 2.0

MySQL Default Credentials

ANM

All versions prior to ANM 2.0

Java Agent Privilege Escalation

ANM

All versions prior to ANM 2.0 Update A

Determining ACE Device Manager Software Version

The ACE Device Manager is embedded with the ACE appliance software.

To display the version of system software that is currently running on the device, use the show version command. The following example includes the output of the show version command on a Cisco ACE appliance running software version A3(2.1):

ACE-4710/Admin# show version
Cisco Application Control Software (ACSW)
TAC support: http://www.cisco.com/tac
Copyright (c) 1985-2008 by Cisco Systems, Inc. All rights reserved.
The copyrights to certain works contained herein are owned by
other third parties and are used and distributed under license.
Some parts of this software are covered under the GNU Public
License. A copy of the license is available at
http://www.gnu.org/licenses/gpl.html.

Software
  loader:    Version 0.95
  system:    Version A3(2.1) [build 3.0(0)A3(2.1) adbuild_14:33:29-2008/11/19_/auto/adbu-rel4/rel_a3_2_1_throttle_build/REL_3_0_0_A3_2_1]
  system image file: (nd)/192.168.65.32/scimitar.bin
  Device Manager version 1.1 (0) 20081113:2052
---

Determining ANM Software Version

To display the version of ANM software that is currently installed, login to the ANM server and select the About keyword in the upper right. An informational pop up window will be displayed. ANM Version 2.0 Update A is indicated in the example output below.

    Version: 2.0(0), Update: A 
    Build Number: 709 
    Build Timestamp: 20081031:1226 

Products Confirmed Not Vulnerable

The Cisco ACE XML Gateway, Cisco ACE GSS (Global Site Selector) 4400 Series and Cisco ACE Web Application Firewall are not affected by any of these vulnerabilities.

No other Cisco products are currently known to be affected by these vulnerabilities.

Details

ANM is a network management application that manages Cisco ACE modules or appliances. ANM is installed on customer provided servers with a Red Hat Enterprise Linux operating system. The ACE Device Manager provides a browser-based interface for configuring and managing a single ACE appliance. The ACE Device Manager resides in flash memory on the ACE appliance. Multiple vulnerabilities exist in ANM and one in the ACE Device Manager products. The following details are provided for each vulnerability addressed in this security advisory.

Invalid Directory Permissions

Versions of the Cisco ACE Device Manager prior to software version A3(2.1) and Cisco ANM prior software version ANM 2.0 contain directory traversal vulnerabilities. These vulnerabilities could allow unauthorized access to ACE operating system and host operating system files. To exploit these vulnerabilities authentication is required to initially access either product.

This vulnerability is documented in the following Cisco Bug IDs:

This vulnerability has been assigned the Common Vulnerability and Exposures (CVE) ID CVE-2009-0615.

Default User Credentials

Versions of Cisco ANM prior to software version ANM 2.0 do not force credential changes during installation. If these credentials are left unchanged, this could allow unauthorized access to the ANM application with default user credentials.

This vulnerability is documented in the following Cisco Bug ID:

This vulnerability has been assigned the Common Vulnerability and Exposures (CVE) ID CVE-2009-0616.

MySQL Default Credentials

ANM versions prior to ANM 2.0 use a default MySQL root user password during installation. The MySQL database is installed by default when ANM is initially installed. This vulnerability can be exploited remotely with default credential authentication and without end-user interaction. Unauthorized access to the database may allow modification of system files that could impact the function of ANM or allow execution of commands on the underlying host operating system. The ACE appliance and module device configuration files in the MySQL database are encrypted.

This vulnerability is documented in the following Cisco Bug ID:

This vulnerability has been assigned the Common Vulnerability and Exposures (CVE) ID CVE-2009-0617.

Java Agent Privilege Escalation

ANM versions prior to ANM 2.0 Update A contain a remotely exploitable vulnerability that could allow an attacker to view configuration files and modify ANM processes including the capability to stop services. Exploitation of this issue could result in system information disclosure or denial of services.

This vulnerability is documented in the following Cisco Bug ID:

This vulnerability has been assigned the Common Vulnerability and Exposures (CVE) ID CVE-2009-0618.

Vulnerability Scoring Details

Cisco has provided scores for the vulnerabilities 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 .

CSCsv66063 - ACE Device Manager invalid directory permissions

Calculate the environmental score of CSCsv66063

CVSS Base Score - 9

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

Single

Complete

Complete

Complete

CVSS Temporal Score - 7.4

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed

CSCsv70130 - ANM invalid directory permissions

Calculate the environmental score of CSCsv70130

CVSS Base Score - 9

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

Single

Complete

Complete

Complete

CVSS Temporal Score - 7.4

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed

CSCsu52724 - ANM default user credentials during installation

Calculate the environmental score of CSCsu52724

CVSS Base Score - 10

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

Complete

Complete

Complete

CVSS Temporal Score - 8.7

Exploitability

Remediation Level

Report Confidence

High

Official-Fix

Confirmed

CSCsu52632 - ANM embedded MySQL default credentials

Calculate the environmental score of CSCsu52632

CVSS Base Score - 10

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

Complete

Complete

Complete

CVSS Temporal Score - 8.7

Exploitability

Remediation Level

Report Confidence

High

Official-Fix

Confirmed

CSCsu73001 - ANM Java agent privilege escalation

Calculate the environmental score of CSCsu73001

CVSS Base Score - 8.5

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

Partial

None

Complete

CVSS Temporal Score - 7.4

Exploitability

Remediation Level

Report Confidence

High

Official-Fix

Confirmed

Impact

Successful exploitation of the ACE Device Manager and ANM invalid directory permission vulnerabilities may allow unauthorized access to view or modify the ACE Device Manager or ANM file system, including host operating system files. Modification of some system files could result in a denial of service condition.

Exploitation of the ANM default user credential and ANM MySQL database default credential vulnerabilities may allow an attacker to gain unauthorized system access. Modification of ANM settings with the default user credentials could result in a denial of service condition. Unauthorized access to the MySQL database may allow modification of system files that could impact the function of ANM or allow execution of commands on the underlying host operating system.

Successful exploitation of the ANM privilege escalation vulnerability may result in unauthorized remote access to system processes and services with the ability to modify. Modification of these services could result in a denial of service condition.

Software Versions and Fixes

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 following software table identifies the earliest possible software release that contains the fix listed in the "First Fixed Release" column of the table. The "Recommended Release" column indicates the release which have fixes for all the published vulnerabilities at the time of this Advisory.

Vulnerability

First Fixed Release

Recommended Release

ACE Device Manager Invalid Directory Permissions

A3(2.1)

A3(2.1)

ANM Invalid Directory Permissions

ANM 2.0

ANM 2.0 Update A

ANM Default User Credentials

ANM 2.0

ANM 2.0 Update A

ANM MySQL Default Credentials

ANM 2.0

ANM 2.0 Update A

ANM Java Agent Privilege Escalation

ANM 2.0 Update A

ANM 2.0 Update A

ANM 2.0 Update A can be downloaded from ANM 2.0 UPDATE A.

ACE Device Manager A3(2.1) can be downloaded from ACE A3(2.1).


Workarounds

While this Security Advisory describes multiple distinct vulnerabilities, a workaround exists for only the following vulnerability.

ANM Default User Credentials

The ANM user admin account password may be modified after installation by following the procedures documented for Changing the Admin Password located in the ANM User Guide.

Applied Mitigation Bulletin

Additional mitigation techniques that can be deployed on Cisco devices within the network are available in the Cisco Applied Mitigation Bulletin companion document for this advisory:

http://tools.cisco.com/security/center/content/CiscoAppliedMitigationBulletin/cisco-amb-20090225-anm

Obtaining Fixed Software

Cisco has released free software updates that address these vulnerabilities. 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 Service Contracts

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 Using Third-Party Support Organizations

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 Without Service Contracts

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.

Exploitation and Public Announcements

The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerabilities described in this advisory.

Acknowledgement to the National Australia Bank's Security Assurance team for the discovery and reporting of the ACE Device Manager directory permissions vulnerability.

The remaining vulnerabilities were identified through internal testing.

Status of This Notice: Final

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.


Distribution

This advisory is posted on Cisco's worldwide website at :

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20090225-anm

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 History

Revision 1.0

2009-February-25

Initial public release

Cisco Security Procedures

Complete information on reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available on Cisco's worldwide website at http://www.cisco.com/web/about/security/psirt/security_vulnerability_policy.html. This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at http://www.cisco.com/go/psirt.


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