CVE-2018-4404 is a memory corruption vulnerability affecting iOS before version 11.4 and macOS High Sierra before 10.13.5. The issue arises from improper memory handling, which could potentially allow an attacker to execute arbitrary code or cause a denial of service via crafted input.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module targeting a type confusion vulnerability in the JavaScript Proxy object implementation in WebKit (Safari) on macOS (CVE-2018-4233), with a second stage exploiting a logic error in libxpc (CVE-2018-4404). The exploit is delivered via a malicious web page, leveraging the browser as the attack vector. The module serves a crafted HTML/JavaScript payload to the victim's Safari browser, which, if vulnerable, results in arbitrary code execution. The exploit supports customizable payloads (defaulting to a Python Meterpreter reverse shell) and is operational, requiring the victim to visit the attacker's web server. The code references two binary files (stage1.bin and stage2.dylib) as part of the exploitation chain. The module is written in Ruby (for Metasploit) and includes embedded JavaScript for the browser exploit. The targeted products are specific versions of Safari on macOS 10.12.6 to 10.13.3.
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.
No public activity tracked yet. Mallory keeps watching.
No public activity observed for this vulnerability.
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.