Improper input validation in Skype for Business and Microsoft Lync - CVE-2018-8238
Published: July 10, 2018 / Updated: July 10, 2018
Vulnerability identifier: #VU13789
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2018-8238
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Skype for Business
Microsoft Lync
Skype for Business
Microsoft Lync
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to improper validation of UNC path links shared via messages. A remote attacker can construct a specially crafted link to file, trick the victim into clicking on that link and execute arbitrary code on the target system with privileges of the current user.
How to mitigate CVE-2018-8238
Install updates from vendor's website.