Memory corruption in Microsoft XML Core Services - CVE-2012-1889

Vulnerability identifier: #VU3963

CSH Severity: Critical

CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2012-1889

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 in XML Core Services (MSXML) when attempting to access an object in memory that has not been initialized. A remote attacker can create a specially crafted Web site, trick the victim into viewing 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.

Microsoft XML Core Services

Install update from vendor's website.

• Exploit #731 - Microsoft XML Core Services - MSXML Uninitialized Memory Corruption (MS12-043) (Metasploit) (March 18, 2020)
• Exploit #1657 - MS12-043 Microsoft XML Core Services MSXML Uninitialized Memory Corruption (March 18, 2020)

• https://technet.microsoft.com/en-us/library/security/ms12-043

• Remote code execution in Microsoft XML Core Services