Advisory ID: cisco-sa-20100609-axp
For Public Release 2010 June 9 16:00 UTC (GMT)
The Cisco Application Extension Platform contains a privilege escalation vulnerability in the tech support diagnostic shell that may allow an authenticated user to obtain administrative access to a vulnerable Cisco Application Extension Platform module. Cisco has released free software updates that address this vulnerability. There is no workaround for this vulnerability.
This advisory is posted at http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20100609-axp.
The following products are affected by this vulnerability:
- Cisco Application Extension Platform version 1.1
- Cisco Application Extension Platform version 1.1.5 if upgraded from version 1.1
The following products are not affected by this vulnerability:
- Cisco Application Extension Platform version 1.0
- Cisco Application Extension Platform version 1.1.5 if upgraded from version 1.0 or a clean installation
- Cisco Application Extension Platform version 1.1.7
- Cisco Application Extension Platform version 1.5.x
No other Cisco products are currently known to be affected by this vulnerability.
The Cisco Application Extension Platform (AXP) allows third-party applications to be hosted on Cisco Integrated Services Routers (ISR). A privilege escalation vulnerability exists in command-line interface of the the tech support diagnostic shell that may allow an authenticated user to obtain complete administrative access to vulnerable Cisco AXP module. The tech support shell is accessed using the techsupport support shell command.
Authenticated Cisco AXP users can use an application programming interface (API) to execute commands on the Cisco ISR that is hosting the AXP module. It may be possible for an AXP user to obtain sensitive configuration information that allows the user to gain access to the ISR device. Cisco AXP version 1.5 requires that a user be configured in the ISR configuration before the AXP user can execute commands using the API.
This vulnerability is documented in Cisco Bug ID CSCtb65413 ( registered customers only) and has been assigned the Common Vulnerabilities and Exposures (CVE) ID CVE-2010-1572.
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:
Cisco has also provided a CVSS calculator to help compute the environmental impact for individual networks at:
Successful exploitation of the vulnerability may allow an authenticated user to obtain complete administrative access to a vulnerable Cisco Application Extension Platform module.
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.
There is no workaround for this vulnerability.
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 firstname.lastname@example.org or email@example.com for software upgrades.
Cisco Application Extension Platform software version 1.1.7 and later contain fixed software that corrects this vulnerability. Cisco Application Extension Platform software version 1.1.7 can be downloaded at the following link:
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: firstname.lastname@example.org
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 reported to Cisco by n.runs AG.
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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:
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.
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.
Initial puiblic release.