Memory corruption in Microsoft Internet Explorer - CVE-2011-1255

Vulnerability identifier: #VU6120

CSH Severity: High

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2011-1255

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: The vulnerability is being exploited in the wild

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

The weakness exists due to boundary error related to time element when Internet Explorer attempts to access objects that have not been correctly initialized or have been deleted. A remote attacker can create a specially crafted Web site, trick the victim into visiting it, trigger memory corruption and execute arbitrary code with privileges of the current user.

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

Note: According to experts from M86, the vulnerability was exploited in targeted attacks before the official patch release from Microsoft.

Microsoft Internet Explorer

Install update from vendor's website.

• Exploit #1122 - Microsoft Internet Explorer - Time Element Memory Corruption (MS11-050) (March 18, 2020)

• https://technet.microsoft.com/en-us/library/security/ms11-050.aspx

• Multiple vulnerabilities in Microsoft Internet Explorer