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CVE-2012-1889 is a remote code execution vulnerability in Microsoft XML Core Services (MSXML) 3.0, 4.0, 5.0, and 6.0. The flaw is described by Microsoft as an uninitialized memory corruption issue that occurs when MSXML accesses or uses an object in memory that has not been properly initialized. An attacker can trigger the vulnerability by causing a victim to view specially crafted web content that invokes MSXML through Internet Explorer. Microsoft bulletin MS12-043 states that the issue is fixed by modifying how MSXML initializes objects in memory before use. The vulnerability was publicly disclosed and, at the time of bulletin release, Microsoft reported limited targeted exploitation in the wild.
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2 valid exploits after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module: 'msxml_get_definition_code_exec.rb', which exploits a memory corruption vulnerability (CVE-2012-1889) in Microsoft XML Core Services (MSXML) when accessed via Internet Explorer (versions 6 through 9) on Windows XP SP3, Vista SP2, or Windows 7 SP1. The exploit is delivered through a malicious web page hosted by the attacker's HTTP server (as implemented by the Metasploit module). When a vulnerable user visits the page, the exploit leverages the 'getDefinition' API to trigger uninitialized memory usage in msxml3.dll, leading to remote code execution. The module supports multiple targets and uses ROP chains for exploitation on newer systems. The payload is fully customizable via Metasploit, allowing for reverse shells, Meterpreter sessions, or other post-exploitation actions. The code is written in Ruby and is structured as a standard Metasploit browser exploit module, making it weaponized and ready for operational use.
This repository is a proof-of-concept (PoC) for CVE-2012-1889, a critical vulnerability in the Microsoft XML Core Services (MSXML) component used by Internet Explorer 8 on Windows. The repository contains five files: two module information dumps (1.txt, 2.txt), a README.md (in Chinese) describing the exploit components, a test PoC HTML file (cve-2012-1889-test-poc.html), and a log file (log.txt) from the mona.py ROP gadget generator. The main exploit vector is a malicious HTML file that instantiates a vulnerable ActiveX control (classid:f6D90f11-9c73-11d3-b32e-00C04f990bb4) and triggers the vulnerability via crafted JavaScript. The exploit relies on a non-ASLR module (MSVCR71.dll from Java 6u37) to build a ROP chain for bypassing DEP and achieving code execution. The log.txt file details the ROP chain construction for VirtualProtect/VirtualAlloc, confirming the exploit's intent to execute arbitrary shellcode. The repository is structured as a learning or demonstration project, with supporting files for debugging and ROP chain generation, but the main exploit logic is in the HTML/JavaScript code. No weaponized payload is included, but the PoC demonstrates reliable exploitation of the vulnerability in a controlled environment.
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A remote code execution vulnerability in Microsoft XML Core Services caused by improper handling of objects in memory (uninitialized memory corruption). Successful exploitation could let an attacker execute code if a user visits a specially crafted webpage, potentially leading to full system compromise under the user's context.
A remote code execution vulnerability in Microsoft XML Core Services (MSXML) caused by access to an object in memory that has not been initialized.
A remote code execution vulnerability in Microsoft XML Core Services caused by uninitialized memory corruption.
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