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A use-after-free vulnerability in Microsoft Internet Explorer 6 through 10 allows remote attackers to execute arbitrary code by inducing the browser to access an object after it has been deleted. The flaw is triggered through a crafted web page and was publicly demonstrated at Pwn2Own 2013. Successful exploitation can corrupt memory and redirect execution flow, resulting in arbitrary code execution in the security context of the current user.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module (ms13_037_svg_dashstyle.rb) that exploits an integer overflow vulnerability (CVE-2013-2551) in Microsoft Internet Explorer 8 on Windows 7 SP1. The exploit targets a flaw in the handling of dashstyle.array lengths in the vgx.dll module, allowing for arbitrary code execution via heap spraying and a ROP chain. The module supports two ASLR bypass methods: an information leak using specific versions of ntdll.dll, or a ROP chain leveraging Java Runtime Environment 6 if present. The exploit is weaponized, allowing the attacker to deliver customizable Metasploit payloads (such as Meterpreter shells) to the victim's browser. The module sets up an HTTP server to deliver the malicious HTML/JavaScript to the target browser. The exploit will only proceed if the target's environment matches the required configuration (correct ntdll.dll version or JRE6 present), otherwise it returns a 404 error to avoid crashing incompatible targets. The code is structured as a typical Metasploit browser exploit, with options for JavaScript obfuscation and ROP method selection.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A specific 2013 vulnerability heavily adopted by exploit kits, making it operationally significant due to broad exploit-pack inclusion.
An exploit used by the Nuclear Pack exploit kit to deliver the CryptoFortress ransomware.
A specific Internet Explorer 7/8/9 vulnerability included in the RIG exploit pack.
A specifically named vulnerability advertised as part of an exploit chain associated in the content with Magnitude exploit kit activity targeting Internet Explorer users.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.