ID

VAR-201104-0077

CVE

CVE-2011-0951

TITLE

Cisco Secure Access Control System (ACS) Unauthorized Password Change Security Bypass Vulnerability

DESCRIPTION

The web-based management interface in Cisco Secure Access Control System (ACS) 5.1 before 5.1.0.44.6 and 5.2 before 5.2.0.26.3 allows remote attackers to change arbitrary user passwords via unspecified vectors, aka Bug ID CSCtl77440. The problem is Bug ID CSCtl77440 It is a problem.A third party may change the password of any user. This vulnerability cannot be used to change the type of user account: (1) An account defined on an external identity store such as a Lightweight Directory Access Protocol (LDAP) server, Microsoft Active Directory Server, RSA SecureID server, or external RADIUS server. This issue is being tracked by Cisco Bug ID CSCtl77440. An attacker can exploit this issue to change a user's password, thereby aiding in further attacks. ---------------------------------------------------------------------- Secunia Research and vulnerability disclosures coordinated by Secunia: http://secunia.com/research/ ---------------------------------------------------------------------- TITLE: Cisco Secure Access Control System Password Change Vulnerability SECUNIA ADVISORY ID: SA43924 VERIFY ADVISORY: Secunia.com http://secunia.com/advisories/43924/ Customer Area (Credentials Required) https://ca.secunia.com/?page=viewadvisory&vuln_id=43924 RELEASE DATE: 2011-03-31 DISCUSS ADVISORY: http://secunia.com/advisories/43924/#comments AVAILABLE ON SITE AND IN CUSTOMER AREA: * Last Update * Popularity * Comments * Criticality Level * Impact * Where * Solution Status * Operating System / Software * CVE Reference(s) http://secunia.com/advisories/43924/ ONLY AVAILABLE IN CUSTOMER AREA: * Authentication Level * Report Reliability * Secunia PoC * Secunia Analysis * Systems Affected * Approve Distribution * Remediation Status * Secunia CVSS Score * CVSS https://ca.secunia.com/?page=viewadvisory&vuln_id=43924 ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI: * AUTOMATED SCANNING http://secunia.com/vulnerability_scanning/personal/ http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/ DESCRIPTION: A vulnerability has been reported in Cisco Secure Access Control System, which can be exploited by malicious people to bypass certain security restrictions. SOLUTION: Apply patches. Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ PROVIDED AND/OR DISCOVERED BY: Reported by the vendor. ORIGINAL ADVISORY: cisco-sa-20110330-acs: http://www.cisco.com/warp/public/707/cisco-sa-20110330-acs.shtml OTHER REFERENCES: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ DEEP LINKS: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ EXTENDED DESCRIPTION: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ EXTENDED SOLUTION: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ EXPLOIT: Further details available in Customer Area: http://secunia.com/products/corporate/EVM/ ---------------------------------------------------------------------- About: This Advisory was delivered by Secunia as a free service to help private users keeping their systems up to date against the latest vulnerabilities. Subscribe: http://secunia.com/advisories/secunia_security_advisories/ Definitions: (Criticality, Where etc.) http://secunia.com/advisories/about_secunia_advisories/ Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor. Successful exploitation requires the user account to be defined on the internal identity store. Cisco has released free software updates that address this vulnerability. There is no workaround for this vulnerability. This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20110330-acs.shtml. Affected Products ================= Vulnerable Products +------------------ The following Cisco Secure ACS versions are affected by this vulnerability: * Cisco Secure ACS version 5.1 with patch 3, 4, or 5 (or any combination of these patches) installed and without patch 6 or later installed * Cisco Secure ACS version 5.2 without any patches installed * Cisco Secure ACS version 5.2 with patch 1 or 2 (or both of these patches) installed and without patch 3 or later installed The previous list applies to both the hardware appliance and the software-only versions of the product. The following methods can be used to determine which version of the Cisco Secure ACS is installed: * From the Cisco Secure ACS command-line interface (CLI), issue the "show version" command, as shown in the following example: acs51a/admin# show version Cisco Application Deployment Engine OS Release: 1.2 ADE-OS Build Version: 1.2.0.152 ADE-OS System Architecture: i386 Copyright (c) 2005-2009 by Cisco Systems, Inc. All rights reserved. Hostname: acs51a Version information of installed applications --------------------------------------------- Cisco ACS VERSION INFORMATION ----------------------------- Version : 5.1.0.44.6 Internal Build ID : B.2347 Patches : 5-1-0-44-3 5-1-0-44-6 acs51a/admin# * On the main login page of the Cisco Secure ACS web-based interface, the version information is displayed on the left side of the screen. The presence of an additional digit after the version number indicates the highest patch level installed. The absence of any additional digit after the version string indicates a Cisco Secure ACS version with no patches installed. No other Cisco products are currently known to be affected by this vulnerability. Successful exploitation requires the user account to be defined on the internal identity store. Vulnerability Scoring Details ============================= 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 * CSCtl77440 ("Able to arbitrarily change user account passwords") CVSS Base Score - 5.0 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - Partial Availability Impact - None CVSS Temporal Score - 4.4 Exploitability - High Remediation Level - Official-Fix Report Confidence - Confirmed Impact ====== Successful exploitation of this vulnerability could allow an attacker to change the password of any user account that is defined on the internal identity store. Because the user would not know the new password, the attacker could also prevent a user from authenticating. 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. Customers can implement the UCP functionality through either a web-based front-end application or a scripting interface. Because this access would allow exploitation of the vulnerability described in this advisory, both of the following recommendations apply: * Stop providing UCP services * Do not include any computer that offers UCP services (either web-based or scripted) in the set of management stations that are allowed to access the ACS server Obtaining Fixed Software ======================== 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 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 vulnerability described in this advisory. This vulnerability was found during 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://www.cisco.com/warp/public/707/cisco-sa-20110330-acs.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 ================ +------------------------------------------------------------+ | Revision 1.0 | 2011-March-30 | 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/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 http://www.cisco.com/go/psirt. +-------------------------------------------------------------------- Copyright 2010-2011 Cisco Systems, Inc. All rights reserved. +-------------------------------------------------------------------- Updated: Mar 30, 2011 Document ID: 112913 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iF4EAREIAAYFAk2TR14ACgkQQXnnBKKRMNBJ/QD/UfAf8bg3i7og/U7d0WVTQX6p 33sdmFcCI5RvrbqXIVAA/10DfgXyajCCY0vL+gNCFwIu+7gONOvksL1/8wcdWmOa =7sC3 -----END PGP SIGNATURE-----

IOT TAXONOMY

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

trust management

CONFIGURATIONS

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Cisco.

SOURCES

LAST UPDATE DATE

2024-11-23T22:53:38.250000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE