Zero-day vulnerability in Microsoft Office

Memory corruption
CVE-2014-1761

Used in Pawn Storm campaign, attacks against government agencies in Taiwan.

Known malware:

Trojans like Dridex or Dyreza and ransomware like cryptolocker or Teslacrypt.

Vulnerability details

Advisory: SB2014032401 - Multiple vulnerabilities in Microsoft Word and Office Web Apps

Vulnerable component: Microsoft Office

CVE-ID: CVE-2014-1761

CVSSv3 score: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Description:

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to boundary error when handling RTF-formatted data. A remote attacker can create a specially crafted RTF file, trick the victim into opening it, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.

Public Exploits:

Vulnerability Scanning SaaS

Vulnerability scanning SaaS service is online 3-rd generation vulnerability scanner with scheduled assessments and vulnerability subscription. You can use service to check security of your network perimeter.