KLA10729 Privilege escalation vulnerability in WinRAR

Improper files handling was found in WinRAR. By exploiting this vulnerability malicious users can execute arbitrary code with WinRAR privileges. This vulnerability can be exploited remotely via a specially designed archive.

Technical details

This vulnerability related to two WinRAR functions:one which allows execute arbitrary local file. If that file does not have extension – file with same name but with extension will be executed. And other which allow to save and load registry settings. If executable file with regedit name will exists in current folder that file will be executed instead of Windows registry editor.

Original advisories

JVN advisory

Related products

WinRAR

CVE list

CVE-2015-5663 warning

Solution

Update to the latest version

WinRAR downloads

Impacts

• SB

Security bypass. Exploitation of vulnerabilities with this impact can lead to performing actions restricted by current security settings.

• PE

Privilege escalation. Exploitation of vulnerabilities with this impact can lead to performing by abuser actions, which are normally disallowed for current role.

Affected Products

• Winrar versions earlier than 5.30 beta 5