SB2018021506 - Privilege escalation in Microsoft Skype

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Main Vulnerability Database SB2018021506

SB2018021506 - Privilege escalation in Microsoft Skype

Published: February 15, 2018

Security Bulletin ID SB2018021506
CSH Severity
Low
Patch available
NO
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Privilege escalation (CVE-ID: N/A)

CWE-ID: CWE-427 - Uncontrolled Search Path Element

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


The vulnerability allows a local attacker to gain elevated privileges on the target system.

The vulnerability exists due to insecure .dll loading mechanism when opening files. A local attacker can place a file along with specially crafted DLL in the '[SystemRoot]\Temp\' directory, and execute arbitrary code with system privileges when the Skype update mechanism ('[ProgramFiles]\Skype\Updater\Updater.exe') runs.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.


Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References