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CVE-2017-13861 is a memory corruption vulnerability in the IOSurface component of Apple iOS, tvOS, and watchOS. It affects iOS before 11.2, tvOS before 11.2, and watchOS before 4.2. The flaw can be triggered by a crafted application and stems from improper memory handling in IOSurface. Successful exploitation may allow an attacker to execute arbitrary code in a privileged, including kernel, context, or to cause a denial of service through memory corruption.
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What an attacker gets, and what they’ve been doing with it.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a single Metasploit module: 'webkit_createthis.rb', which targets a type confusion vulnerability in the JavaScript Proxy object implementation in WebKit (CVE-2018-4233) on Apple iOS devices. The exploit is delivered via a malicious web page, leveraging a JIT bug to achieve arbitrary read/write in the Safari process. It then uses a ROP chain to execute shellcode, which loads a second-stage Mach-O binary exploiting CVE-2017-13861 (async_wake) to escalate privileges to kernel level (TFP0). The exploit ultimately disables sandboxing and code signing restrictions, allowing a self-signed meterpreter payload to be loaded and executed, providing the attacker with a reverse shell. The module is highly weaponized, supporting customizable payloads and requiring the attacker to specify LHOST and LPORT for the reverse connection. The main attack vector is browser-based, requiring the victim to visit a malicious web page. The module is intended for advanced exploitation and post-exploitation on vulnerable iOS devices.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A memory corruption issue in IOSurface that could allow arbitrary code execution with kernel privileges.
CVE-2017-13861 is a vulnerability in watchOS that can be exploited to execute arbitrary code, such as loading and running the Mettle Meterpreter payload, enabling remote access and post-exploitation capabilities on the device.
An iOS vulnerability cited as part of a list of public jailbreak exploits for contextual background.
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.