Cisco Security Advisory: Multiple Vulnerabilities in Cisco IronPort Encryption Appliance

2010-02-16T00:00:00
ID SECURITYVULNS:DOC:23237
Type securityvulns
Reporter Securityvulns
Modified 2010-02-16T00:00:00

Description

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Cisco Security Advisory: Multiple Vulnerabilities in Cisco IronPort Encryption Appliance

Advisory ID: cisco-sa-20100210-ironport

Revision 1.0

For Public Release 2010 February 10 1600 UTC (GMT)

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Summary

Cisco IronPort Encryption Appliance devices contain two vulnerabilities that allow remote, unauthenticated access to any file on the device and one vulnerability that allows remote, unauthenticated users to execute arbitrary code with elevated privileges. There are workarounds available to mitigate these vulnerabilities.

Cisco has released free software updates that address these vulnerabilities. This advisory is posted at:

http://www.cisco.com/warp/public/707/cisco-sa-20100210-ironport.shtml

Affected Products

Vulnerable Products +------------------

The following Cisco IronPort Encryption Appliance versions are affected by these vulnerabilities:

• Cisco IronPort Encryption Appliance 6.5 versions prior to 6.5.2 • Cisco IronPort Encryption Appliance 6.2 versions prior to 6.2.9.1 • Cisco IronPort PostX MAP versions prior to 6.2.9.1

The version of software that is running on a Cisco IronPort Encryption Appliance is located on the "About" page of the Cisco IronPort Encryption Appliance administration interface.

Note: Customers should contact IronPort support to determine which software fixes are applicable for their environment. Please consult the Obtaining Fixed Software section of this advisory for more information.

Products Confirmed Not Vulnerable +--------------------------------

Cisco IronPort C, M, and S-Series appliances are not affected by these vulnerabilities. No other Cisco products are currently known to be affected by these vulnerabilities.

Details

Note: IronPort tracks bugs using an internal system that is not available to customers. The IronPort bug tracking identifiers are provided for reference only.

The Cisco IronPort Encryption Appliance contains two information disclosure vulnerabilities that allow remote, unauthenticated access to arbitrary files on vulnerable devices via the embedded HTTPS server. The first vulnerability affecting the Cisco IronPort Encryption Appliance administration interface is documented in IronPort bug 65921 and has been assigned Common Vulnerabilities and Exposures (CVE) identifier CVE-2010-0143. The second vulnerability affecting the WebSafe servlet is documented in IronPort bug 65922 and has been assigned Common Vulnerabilities and Exposures (CVE) identifier CVE-2010-0144.

The Cisco IronPort Encryption Appliance contains a remote code execution vulnerability that allows an unauthenticated attacker to run arbitrary code with elevated privileges on vulnerable devices via the embedded HTTPS server. The vulnerability is documented in IronPort bug 65923 and has been assigned Common Vulnerabilities and Exposures (CVE) identifier CVE-2010-0145.

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

IronPort Bug 65921 - Arbitrary File Access Through Administrative Interface

CVSS Base Score - 7.8

Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - Complete Integrity Impact - None Availability Impact - None

CVSS Temporal Score - 6.4

Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed

IronPort Bug 65922 - WebSafe DistributorServlet Allows Unauthenticated Arbitrary File Access

CVSS Base Score - 7.8

Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - Complete Integrity Impact - None Availability Impact - None

CVSS Temporal Score - 6.4

Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed

IronPort Bug 65923 - Default Config Allows Unauthenticated Remote Arbitrary Code

CVSS Base Score - 10

Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete

CVSS Temporal Score - 8.3

Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed

Impact

Successful exploitation of these vulnerabilities may allow a remote, unauthenticated attacker to access arbitrary files or execute arbitrary code with elevated privileges.

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.

Workarounds

It is possible to mitigate the administration interface file access vulnerability (IronPort Bug 65921) by using the IP address restriction feature of the administration interface to limit access to trusted hosts. Access to the administration interface is not restricted by default. To configure access limits, an administrator should navigate to "Configuration -> Web Services -> Admin -> Console Security" area in the Cisco IronPort Encryption Appliance administration interface.

It is possible to workaround the remote code execution vulnerability (IronPort Bug 65923) by disabling HTTP Invoker in the Cisco IronPort Encryption Appliance configuration files. To disable the HTTP Invoker, an administrator must delete several files in the PostX application home directory and remove a directive from the web server configuration. The following files must be deleted:

jboss/server/postx/deploy/http-invoker.sar

jboss/server/postx/deploy/jms/jbossmq-httpil.sar

The following directive must be removed from the "jboss/server/postx/conf/jboss-service.xml web" server configuration file.

<mbean code="org.jboss.varia.deployment.BeanShellSubDeployer"
      name="jboss.scripts:service=BSHDeployer">
 </mbean>

After deleting the files and removing the directive from the configuration file, the PostX application service must be restarted.

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://www.cisco.com/warp/public/707/cisco-amb-20100210-ironport.shtml

Obtaining Fixed Software

Cisco has released free software updates that address these vulnerabilities. The affected products in this advisory are directly supported by Cisco IronPort. Customers should contact Cisco IronPort technical support at the link below to obtain software fixes. Cisco IronPort technical support will assist customers in determining the correct fixes and installation procedures. Customers should direct all warranty questions to IronPort technical support.

Note: Do not contact psirt@cisco.com or security-alert@cisco.com for software upgrades.

http://www.ironport.com/support/contact_support.html

Exploitation and Public Announcements

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

These vulnerabilities were discovered and reported to Cisco by Jesse Michael and Alexander Senkevitch of Blue Cross Blue Shield of Illinois. Cisco would like to thank Jesse and Alexander for reporting these vulnerabilities to us and for working with us on a coordinated disclosure.

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://www.cisco.com/warp/public/707/cisco-sa-20100210-ironport.shtml

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

┌──────────┬─────────────┬──────────────┐ в”‚ Revision в”‚ в”‚ Initial в”‚ в”‚ 1.0 в”‚ 2010-FEB-10 в”‚ public в”‚ в”‚ в”‚ в”‚ release в”‚ в””в”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”ґв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”ґв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”Ђв”˜

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/en/US/products/products_security_vulnerability_policy.html

This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at:

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