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CVE-2017-13861

Status Candidate

Overview

An issue was discovered in certain Apple products. iOS before 11.2 is affected. tvOS before 11.2 is affected. watchOS before 4.2 is affected. The issue involves the "IOSurface" component. It allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.

Related Files

Safari Webkit Proxy Object Type Confusion
Posted Jun 2, 2019
Authored by saelo, ianbeer, Siguza, niklasb | Site metasploit.com

This Metasploit module exploits a type confusion bug in the Javascript Proxy object in WebKit. The DFG JIT does not take into account that, through the use of a Proxy, it is possible to run arbitrary JS code during the execution of a CreateThis operation. This makes it possible to change the structure of e.g. an argument without causing a bailout, leading to a type confusion (CVE-2018-4233). The type confusion leads to the ability to allocate fake Javascript objects, as well as the ability to find the address in memory of a Javascript object. This allows us to construct a fake JSCell object that can be used to read and write arbitrary memory from Javascript. The module then uses a ROP chain to write the first stage shellcode into executable memory within the Safari process and kick off its execution. The first stage maps the second stage macho (containing CVE-2017-13861) into executable memory, and jumps to its entrypoint. The CVE-2017-13861 async_wake exploit leads to a kernel task port (TFP0) that can read and write arbitrary kernel memory. The processes credential and sandbox structure in the kernel is overwritten and the meterpreter payloads code signature hash is added to the kernels trust cache, allowing Safari to load and execute the (self-signed) meterpreter payload.

tags | exploit, arbitrary, kernel, javascript, shellcode
advisories | CVE-2017-13861, CVE-2018-4233
MD5 | 394148cda471deeb3abbfdccf622fa46
Apple Security Advisory 2017-12-13-6
Posted Dec 16, 2017
Authored by Apple | Site apple.com

Apple Security Advisory 2017-12-13-6 - iOS 11.2 addresses issues relating to interception, memory corruption, and more. This advisory provides additional information for APPLE-SA-2017-12-6-2.

tags | advisory
systems | apple, ios
advisories | CVE-2017-13080, CVE-2017-13833, CVE-2017-13847, CVE-2017-13855, CVE-2017-13856, CVE-2017-13860, CVE-2017-13861, CVE-2017-13862, CVE-2017-13865, CVE-2017-13866, CVE-2017-13867, CVE-2017-13868, CVE-2017-13869, CVE-2017-13870, CVE-2017-13874, CVE-2017-13876, CVE-2017-13879, CVE-2017-2433, CVE-2017-7156, CVE-2017-7157
MD5 | 0a229b7e892cdfb7fc2ff4e89c6e0803
Apple Security Advisory 2017-12-13-7
Posted Dec 15, 2017
Authored by Apple | Site apple.com

Apple Security Advisory 2017-12-13-7 - tvOS 11.2 addresses memory corruption vulnerabilities.

tags | advisory, vulnerability
systems | apple
advisories | CVE-2017-13080, CVE-2017-13833, CVE-2017-13855, CVE-2017-13856, CVE-2017-13861, CVE-2017-13862, CVE-2017-13865, CVE-2017-13866, CVE-2017-13867, CVE-2017-13868, CVE-2017-13869, CVE-2017-13870, CVE-2017-13876, CVE-2017-7156, CVE-2017-7157
MD5 | cf883db6f7f95bcf245df44b572bf4f5
macOS / iOS Kernel IOSurfaceRootUserClient Double-Free
Posted Dec 12, 2017
Authored by Google Security Research, ianbeer

macOS and iOS suffer from a kernel double free vulnerability due to IOSurfaceRootUserClient not respecting MIG ownership rules.

tags | exploit, kernel
systems | cisco, ios
advisories | CVE-2017-13861
MD5 | 184f6e2345e9d5d30fb5251e4ff335fc
Apple Security Advisory 2017-12-6-3
Posted Dec 8, 2017
Authored by Apple | Site apple.com

Apple Security Advisory 2017-12-6-3 - watchOS 4.2 addresses memory corruption and various other vulnerabilities.

tags | advisory, vulnerability
systems | apple
advisories | CVE-2017-13080, CVE-2017-13833, CVE-2017-13855, CVE-2017-13861, CVE-2017-13862, CVE-2017-13865, CVE-2017-13867, CVE-2017-13868, CVE-2017-13869, CVE-2017-13876
MD5 | 9c96343ac0bc6ec9b05f5068ff7a1739
Apple Security Advisory 2017-12-6-4
Posted Dec 8, 2017
Authored by Apple | Site apple.com

Apple Security Advisory 2017-12-6-4 - tvOS 11.2 addresses memory corruption, code execution, and various other vulnerabilities.

tags | advisory, vulnerability, code execution
systems | apple
advisories | CVE-2017-13080, CVE-2017-13833, CVE-2017-13855, CVE-2017-13861, CVE-2017-13862, CVE-2017-13865, CVE-2017-13867, CVE-2017-13868, CVE-2017-13869, CVE-2017-13876
MD5 | e9b98a21accf66889dbd5660eed84965
Apple Security Advisory 2017-12-6-2
Posted Dec 8, 2017
Authored by Apple | Site apple.com

Apple Security Advisory 2017-12-6-2 - iOS 11.2 addresses issues relating to interception, memory corruption, and more.

tags | advisory
systems | cisco, apple, ios
advisories | CVE-2017-13080, CVE-2017-13833, CVE-2017-13847, CVE-2017-13855, CVE-2017-13860, CVE-2017-13861, CVE-2017-13862, CVE-2017-13865, CVE-2017-13867, CVE-2017-13868, CVE-2017-13869, CVE-2017-13874, CVE-2017-13876, CVE-2017-13879
MD5 | cea41172dc6c7e7c2f88844143136668
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