TeamSpeak WebAdmin interface privilege escalation

teamspeak-webadmin-privilege-escalation (34254) The risk level is classified as MediumMedium Risk

Description:

TeamSpeak could allow a remote attacker to gain elevated privileges on the system, caused by a vulnerability on the RegisteredUser privileges configuration page. A remote registered attacker with ServerAdmin privileges could use the WebAdmin interface to create a registered user account and gain unauthorized administrative privileges to create, start, stop or delete TeamSpeak servers.

*CVSS:

Base Score: 3.4
  Access Vector: Remote
  Access Complexity: High
  Authentication: Required
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 2.5
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Privileges

Remedy:

Upgrade to the latest version of TeamSpeak (2.0.23.15 BETA or later), available from the TeamSpeak Web site. See References.

References:

  • Full-Disclosure Mailing List, Fri May 11 2007 - 08:52:43 CDT: Teamspeak Server 2.0.20.1 Vulnerabilities.
  • TeamSpeak Web site: TeamSpeak.
  • BID-23935: TeamSpeak Server WebAdmin Interface Privilege Escalation Vulnerability
  • CVE-2007-4529: The WebAdmin interface in TeamSpeak Server 2.0.20.1 allows remote authenticated users with the ServerAdmin flag to assign Registered users certain privileges, resulting in a privilege set that extends beyond that ServerAdmin's own servers, as demonstrated by the (1) AdminAddServer, (2) AdminDeleteServer, (3) AdminStartServer, and (4) AdminStopServer privileges; and administration of arbitrary virtual servers via a request to a .tscmd URI with a modified serverid parameter, as demonstrated by (a) add_server.tscmd, (b) ask_delete_server.tscmd, (c) start_server.tscmd, and (d) stop_server.tscmd.
  • SA25242: TeamSpeak Server Privilege Escalation and Cross-Site Scripting

Platforms Affected:

  • Microsoft Windows Vista
  • TeamSpeak Systems TeamSpeak 2.0.20.1 and prior

Reported:

May 11, 2007

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