TeamSpeak Server sendRemoteDebuggingInfo race condition

HistoryDiffrelatejsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.9	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in TeamSpeak Server. Affected by this vulnerability is the function VirtualServer::sendRemoteDebuggingInfo. This manipulation causes race condition. Additionally, an exploit exists.

Detailsinfo

A vulnerability was found in TeamSpeak Server (the affected version is unknown). It has been declared as critical. Affected by this vulnerability is the function VirtualServer::sendRemoteDebuggingInfo. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. As an impact it is known to affect confidentiality, and availability.

The weakness was released 08/12/2016 by Hanz Jenson as not defined mailinglist post (Full-Disclosure). It is possible to read the advisory at seclists.org. The vendor was not involved in the public release. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a private exploit are known.

It is declared as proof-of-concept. The advisory illustrates:

For example using "/../../../etc/passwd" gives "bad path" while "/../../../etc/passwz" gives "no such file". This can be used to determine the remote OS and installed software, enumerate open fds, etc.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Entries connected to this vulnerability are available at VDB-90866, VDB-90867, VDB-90868 and VDB-90869. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

TeamSpeak

Name

Server

CPE 2.3info

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CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.5
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Proof-of-Concept
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/12/2016 🔍
08/19/2016 +7 days 🔍
03/30/2019 +953 days 🔍

Sourcesinfo

Advisory: seclists.org
Researcher: Hanz Jenson
Status: Not defined

GCVE (VulDB): GCVE-100-90871
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 08/19/2016 14:13
Updated: 03/30/2019 23:20
Changes: 08/19/2016 14:13 (42), 03/30/2019 23:20 (1)
Complete: 🔍
Cache ID: 216::103