Buffer overflow in OpenLiteSpeed - CVE-2018-19792
Published: December 3, 2018 / Updated: August 8, 2020
Vulnerability identifier: #VU36349
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-19792
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: LiteSpeed Technologies
Affected software:
OpenLiteSpeed
OpenLiteSpeed
Detailed vulnerability description
The vulnerability allows a local privileged user to execute arbitrary code.
The server in LiteSpeed OpenLiteSpeed before 1.5.0 RC6 allows local users to cause a denial of service (buffer overflow) or possibly have unspecified other impact by creating a symlink through which the openlitespeed program can be invoked with a long command name (involving ../ characters), which is mishandled in the LshttpdMain::getServerRootFromExecutablePath function.
How to mitigate CVE-2018-19792
Install update from vendor's website.