Zero-day vulnerability in Microsoft Internet Explorer

Use-after-free error

The vulnerability has been exploited in watering hole attack against Department of Labor (DoL). Used in Pawn Storm campaign.

Vulnerability details

Advisory: SB2013050301 - Remote code execution in Microsoft Internet Explorer

Vulnerable component: Microsoft Internet Explorer

CVE-ID: CVE-2013-1347

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-416 - Use After Free


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

The weakness exists due to use-after-free error in the CGenericElement object. A remote attacker can create specially crafted Web page, trick the victim into visiting 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.

Known APT campaigns:

Department of Labor breach

The attack took place in April, 2013.

Sun Shop Campaign

The campaign was first detected on May 20, 2013.

Public Exploits: