#VU17819 Out-of-bounds write in WinRAR - CVE-2018-20253
Published: February 21, 2019 / Updated: May 18, 2020
Vulnerability identifier: #VU17819
Vulnerability risk: Low
CVSSv4.0: 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:P/U:Clear
CVE-ID: CVE-2018-20253
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
Public exploit is available
Vulnerable software:
WinRAR
WinRAR
Software vendor:
RARLAB
RARLAB
Description
The vulnerability allows a local attacker to gain elevated privileges.
The vulnerability exists due to out-of-bounds write during parsing crafted LHA / LZH archive formats. A local attacker can supply specially crafted input, trigger memory corruption and execute arbitrary code with elevated privileges.
Remediation
Update to version 5.70 Beta 1.