Akeo Consulting Rufus prior to version 2.17.1187 does not adequately validate the integrity of updates downloaded over HTTP, allowing an attacker to easily convince a user to execute arbitrary code

Rufus is a utility that helps format and create bootable USB flash drives. Versions 4.11 and below contain a race condition (TOCTOU) in src/net.c during the creation, validation, and execution of the Fido PowerShell script. Since Rufus runs with elevated privileges (Administrator) but writes the script to the %TEMP% directory (writeable by standard users) without locking the file, a local attacker can replace the legitimate script with a malicious one between the file write operation and the execution step. This allows arbitrary code execution with Administrator privileges. This issue has been fixed in version 4.12BETA.

Akeo Consulting Rufus 3.0 and earlier is affected by: Insecure Permissions. The impact is: arbitrary code execution with escalation of privilege. The component is: Executable installer, portable executable (ALL executables available). The attack vector is: CWE-29, CWE-377, CWE-379.

Akeo Consulting Rufus 3.0 and earlier is affected by: DLL search order hijacking. The impact is: Arbitrary code execution WITH escalation of privilege. The component is: Executable installers, portable executables (ALL executables on the web site). The attack vector is: CAPEC-471, CWE-426, CWE-427.