Zero-day vulnerability in Ichitaro

Heap-based buffer overflow
CVE-2011-1331

According to Symantec the first exploitation of the vulnerability was discovered on 2009-03-19.

Known malware:

Trojan.Tarodrop.L

Vulnerability details

Advisory: SB2011061501 - Remote code execution in JustSystems Ichitaro

Vulnerable component: Ichitaro

CVE-ID: CVE-2011-1331

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-122 - Heap-based Buffer Overflow

Description:

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

The weakness exists due to heap-based buffer overflow when handling malformed files. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the system 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.