The vulnerability was detected by FireEye researchers. The attacker used Microsoft Office RTF document to leverage RCE in .NET Framework and deploy FINSPY malware. The malicious document тАЬ╨Я╤А╨╛╨╡╨║╤В.docтАЭ (MD5: fe5c4d6bb78e170abf5cf3741868ea4c) had Russian name and might have been used to target a Russian speaker.
Vulnerable component: Microsoft .NET Framework
CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C
CWE-ID: CWE-20 - Improper Input Validation
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to uncpecified error when processing untrusted input. A remote unauthenticated attacker can execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Note: this vulnerability is being actively exploited in the wild.
- Microsoft Windows .NET Framework - Remote Code Execution [Exploit-DB]