123 Flash Chat Server "user" field directory traversal

123flashchat-user-directory-traversal (24137) The risk level is classified as MediumMedium Risk

Description:

123 Flash Chat Server could allow a remote attacker to traverse directories on the Web server. A remote attacker could supply a specially-crafted 'user' parameter on the new user registration page, which could be used to create arbitrary files outside of the Web root directory.

*CVSS:

Base Score: 3.5
  Access Vector: Remote
  Access Complexity: Low
  Authentication: Not Required
  Confidentiality Impact: Partial
  Integrity Impact: None
  Availability Impact: None
 
Temporal Score: 2.6
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

File Manipulation

Remedy:

Upgrade to the latest version of 123 Flash Chat Server (5.1_2 or later), available from the 123 Flash Chat Web site. See References.

References:

  • 123 Flash Chat Web site: 123 flash chat server software 5.1_2 released.
  • BugTraq Mailing List, Fri Jan 13 2006 - 06:53:34 CST: [ISecAuditors Advisories] Arbitrary remote file creation in 123flashchat server.
  • BID-16235: 123 Flash Chat Server Arbitrary Remote File Creation Vulnerability
  • BID-16360: 123 Flash Chat Remote Code Injection Weakness
  • CVE-2006-0223: Directory traversal vulnerability in Shanghai TopCMM 123 Flash Chat Server Software 5.1 allows attackers to create or overwrite arbitrary files on the server via .. (dot dot) sequences in the username field.
  • CVE-2006-0418: Eval injection vulnerability in 123 Flash Chat Server 5.0 and 5.1 allows attackers to execute arbitrary code via a crafted username.
  • OSVDB ID: 22440: 123 Flash Chat Server Username Traversal Arbitrary File Access
  • OSVDB ID: 22930: 123 Flash Chat Server Eval Injection Privilege Escalation
  • SA18455: 123 Flash Chat Server Username Directory Traversal Vulnerability

Platforms Affected:

  • TopCMM Software 123 Flash Chat Server 5.1_1 and prior

Reported:

Jan 16, 2006

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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