HighPublic exploit

RCE in Apple WebKit (CVE-2018-4162)

IdentifiersCVE-2018-4162CWE-119· Improper Restriction of Operations…

CVE-2018-4162 is a memory corruption vulnerability in the WebKit component used by Apple products including iOS before 11.3, Safari before 11.1, iCloud before 7.4 on Windows, iTunes before 12.7.4 on Windows, tvOS before 11.3, and watchOS before 4.3. The vulnerability can be triggered by a remote attacker via a crafted website, leading to arbitrary code execution or denial of service (application crash). The flaw is due to improper memory handling in WebKit when processing web content.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows remote attackers to execute arbitrary code in the context of the affected application, potentially leading to full compromise of the device or system. Alternatively, it can cause a denial of service by crashing the application. The vulnerability can be exploited via web-based attacks, such as luring users to malicious websites.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, restrict access to untrusted websites and avoid clicking on suspicious links. Employ network-based protections such as DPI rules and filters from security vendors (e.g., Trend Micro Deep Security, TippingPoint) to detect and block exploitation attempts targeting this vulnerability.

Remediation

Patch, then assume compromise.

Apply the security updates provided by Apple: upgrade to iOS 11.3 or later, Safari 11.1 or later, iCloud 7.4 or later on Windows, iTunes 12.7.4 or later on Windows, tvOS 11.3 or later, and watchOS 4.3 or later. These updates address the underlying memory corruption issue in WebKit.

PUBLIC EXPLOITS

Exploits

1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.

VALID 1 / 1 TOTALView more in app

safari_jit.rbMaturityWeaponizedFrameworkmetasploitVerified exploit

This repository contains a single Metasploit module: 'modules/exploits/apple_ios/browser/safari_jit.rb'. The module targets a JIT optimization bug in Safari's Webkit JavaScriptCore on iOS 7.1.2 (iPhone 4), leveraging CVE-2016-4669 and CVE-2018-4162. The exploit is delivered via a malicious web page served by the module's built-in HTTP server. The JavaScript exploit achieves arbitrary code execution by abusing a JIT bug, then escalates privileges to kernel read/write, disables code signing, and finally downloads and executes a Meterpreter payload for remote control. The module defines several HTTP endpoints for serving the exploit, loader, Mach-O binary, and payload. The code is written in Ruby (Metasploit module) and includes embedded JavaScript for the browser exploit. The exploit is weaponized, providing a full remote shell on successful exploitation.

Disclosed Aug 25, 2016rubyjavascriptbrowsernetwork

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

AppleIcloudapplication

AppleIphone Osoperating_system

AppleItunesapplication

AppleSafariapplication

AppleTvosoperating_system

AppleWatchosoperating_system

CanonicalUbuntu Linuxoperating_system

WebkitgtkWebkitgtk+application

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

No public activity tracked yet. Mallory keeps watching.

0 SOURCESView more in app

No public activity observed for this vulnerability.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity