Vulnerability Alert

Cisco Internet Streamer Content Delivery System Web Server Directory Traversal Vulnerability

 
Threat Type:CWE-22: Path Traversal
IntelliShield ID:20853
Version:1
First Published:2010 July 21 15:41 GMT
Last Published:2010 July 21 15:41 GMT
Port: 443, 80, 8090
CVE:CVE-2010-1577
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:7.8 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:6.4
 
Version Summary:

The Cisco Internet Streamer Content Delivery System contains a vulnerability that could allow an unauthenticated, remote attacker to gain unauthorized access. Updates are available.

 
 
Description

The Cisco Internet Streamer application, part of the Cisco Content Delivery System, contains a directory traversal vulnerability in its web server component that allows arbitrary file access. By exploiting this vulnerability, an attacker may be able to read arbitrary files on the device outside the web server document directory by using a specially crafted URL.

An unauthenticated, remote attacker may be able to exploit this issue to access sensitive information, including the password files and system logs, which could be used to launch subsequent attacks.

Cisco confirmed this vulnerability in a security alert and released updated software.

 
Warning Indicators

Cisco Internet Streamer Content Delivery System versions prior to 2.5.7 are vulnerable.

 
IntelliShield Analysis

An exploit could allow the remote attacker to bypass security restrictions and access potentially sensitive information.  The attacker could then use this information to plan future attacks against the targeted system.

 
Vendor Announcements

Cisco has released a security advisory for Cisco bug ID CSCtd68063 at the following link: cisco-sa-20100721-spcdn

 
Impact

An unauthenticated, remote attacker may be able to exploit this issue to access sensitive information, including the password files and system logs, which could be used to launch subsequent attacks.

 
Technical Information

The vulnerability exists because the Cisco Internet Streamer Content Delivery System does not properly enforce web server directory controls. An attacker can supply a malicious, crafted URL to an affected system.  The system will interpret the URL in a way that provides access to files outside the web server directory.

 
Safeguards

Administrators are advised to apply the appropriate updates.

Administrators are advised to implement an intrusion prevention system (IPS) or intrusion detection system (IDS) to help detect and prevent attacks that attempt to exploit this vulnerability.

Administrators may consider configuring service rules to deny access to sensitive information on affected devices. For more information about configuring service rules and for instructions for making these changes using the Content Delivery System Manager, consult the Cisco Internet Streamer CDS 2.5 Software Configuration Guide.

 
Patches/Software

Cisco customers with active contracts can obtain updates through the Software Center at the following link: Cisco.

Cisco customers without contracts can obtain upgrades by contacting the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via e-mail at tac@cisco.com.


Signatures
 
Cisco Intrusion Prevention System (IPS) 6.0
Signature IDSignature NameReleaseLatest Release Date
27199/0Cisco Internet Streamer Directory TraversalS5022010 Jul 21 
 
Alert History
 

Initial Release



Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
CiscoCisco Internet Streamer Content Delivery System (CDS-IS) 2.2 Base | 2.3 Base, .3, .5, .7, .9 | 2.4 Base, .3, .5 | 2.5 .1, .3

Associated Products:
N/A




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LEGAL DISCLAIMER
The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
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