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"Apple macOS < 10.14.5 / iOS < 12.3 DFG JIT Compiler - 'HasIndexedProperty' Use-After-Free"

Author

"Google Security Research"

Platform

multiple

Release date

2019-05-21

Release Date Title Type Platform Author
2019-06-05 "Google Chrome 73.0.3683.103 - 'WasmMemoryObject::Grow' Use-After-Free" dos multiple "Google Security Research"
2019-05-28 "Phraseanet < 4.0.7 - Cross-Site Scripting" webapps multiple "Krzysztof Szulski"
2019-05-27 "Deltek Maconomy 2.2.5 - Local File Inclusion" webapps multiple JameelNabbo
2019-05-29 "Spidermonkey - IonMonkey Unexpected ObjectGroup in ObjectGroupDispatch Operation" dos multiple "Google Security Research"
2019-05-29 "Spidermonkey - IonMonkey Leaks JS_OPTIMIZED_OUT Magic Value to Script" dos multiple "Google Security Research"
2019-05-22 "Zoho ManageEngine ServiceDesk Plus 9.3 - Cross-Site Scripting" webapps multiple Vingroup
2019-05-22 "Zoho ManageEngine ServiceDesk Plus < 10.5 - Improper Access Restrictions" webapps multiple Vingroup
2019-05-21 "Apple macOS < 10.14.5 / iOS < 12.3 XNU - 'in6_pcbdetach' Stale Pointer Use-After-Free" dos multiple "Google Security Research"
2019-05-21 "Apple macOS < 10.14.5 / iOS < 12.3 XNU - Wild-read due to bad cast in stf_ioctl" dos multiple "Google Security Research"
2019-05-21 "Apple macOS < 10.14.5 / iOS < 12.3 JavaScriptCore - AIR Optimization Incorrectly Removes Assignment to Register" dos multiple "Google Security Research"
2019-05-21 "Apple macOS < 10.14.5 / iOS < 12.3 JavaScriptCore - Loop-Invariant Code Motion (LICM) in DFG JIT Leaves Stack Variable Uninitialized" dos multiple "Google Security Research"
2019-05-21 "Apple macOS < 10.14.5 / iOS < 12.3 DFG JIT Compiler - 'HasIndexedProperty' Use-After-Free" dos multiple "Google Security Research"
2019-05-21 "Deluge 1.3.15 - 'URL' Denial of Service (PoC)" dos multiple "Victor Mondragón"
2019-05-13 "Google Chrome V8 - Turbofan JSCallReducer::ReduceArrayIndexOfIncludes Out-of-Bounds Read/Write" dos multiple "Google Security Research"
2019-05-10 "CyberArk Enterprise Password Vault 10.7 - XML External Entity Injection" webapps multiple "Marcelo Toran"
2019-05-10 "TheHive Project Cortex < 1.15.2 - Server-Side Request Forgery" webapps multiple "Alexandre Basquin"
2019-05-07 "Prinect Archive System 2015 Release 2.6 - Cross-Site Scripting" webapps multiple alt3kx
2019-05-08 "Oracle Weblogic Server - 'AsyncResponseService' Deserialization Remote Code Execution (Metasploit)" remote multiple Metasploit
2019-05-08 "PostgreSQL 9.3 - COPY FROM PROGRAM Command Execution (Metasploit)" remote multiple Metasploit
2019-05-06 "ReadyAPI 2.5.0 / 2.6.0 - Remote Code Execution" webapps multiple "Gilson Camelo"
2019-05-03 "Zotonic < 0.47.0 mod_admin - Cross-Site Scripting" webapps multiple "Ramòn Janssen"
2019-04-30 "Domoticz 4.10577 - Unauthenticated Remote Command Execution" webapps multiple "Fabio Carretto"
2019-04-24 "Google Chrome 72.0.3626.121 / 74.0.3725.0 - 'NewFixedDoubleArray' Integer Overflow" remote multiple "Google Security Research"
2019-04-22 "ManageEngine Applications Manager 14.0 - Authentication Bypass / Remote Command Execution (Metasploit)" remote multiple AkkuS
2019-04-22 "Google Chrome 73.0.3683.103 V8 JavaScript Engine - Out-of-Memory in Invalid Table Size Denial of Service (PoC)" dos multiple "Bogdan Kurinnoy"
2019-04-19 "Atlassian Confluence Widget Connector Macro - Velocity Template Injection (Metasploit)" remote multiple Metasploit
2019-04-18 "LibreOffice < 6.0.7 / 6.1.3 - Macro Code Execution (Metasploit)" local multiple Metasploit
2019-04-18 "Netwide Assembler (NASM) 2.14rc15 - NULL Pointer Dereference (PoC)" dos multiple "Fakhri Zulkifli"
2019-04-17 "Oracle Java Runtime Environment - Heap Corruption During TTF font Rendering in GlyphIterator::setCurrGlyphID" dos multiple "Google Security Research"
2019-04-17 "Oracle Java Runtime Environment - Heap Corruption During TTF font Rendering in sc_FindExtrema4" dos multiple "Google Security Research"
Release Date Title Type Platform Author
2019-06-05 "Google Chrome 73.0.3683.103 - 'WasmMemoryObject::Grow' Use-After-Free" dos multiple "Google Security Research"
2019-05-29 "Qualcomm Android - Kernel Use-After-Free via Incorrect set_page_dirty() in KGSL" dos android "Google Security Research"
2019-05-29 "Spidermonkey - IonMonkey Unexpected ObjectGroup in ObjectGroupDispatch Operation" dos multiple "Google Security Research"
2019-05-29 "Spidermonkey - IonMonkey Leaks JS_OPTIMIZED_OUT Magic Value to Script" dos multiple "Google Security Research"
2019-05-23 "Microsoft Windows 10 1809 - 'CmKeyBodyRemapToVirtualForEnum' Arbitrary Key Enumeration Privilege Escalation" local windows "Google Security Research"
2019-05-23 "Visual Voicemail for iPhone - IMAP NAMESPACE Processing Use-After-Free" dos ios "Google Security Research"
2019-05-21 "Apple macOS < 10.14.5 / iOS < 12.3 XNU - 'in6_pcbdetach' Stale Pointer Use-After-Free" dos multiple "Google Security Research"
2019-05-21 "Apple macOS < 10.14.5 / iOS < 12.3 XNU - Wild-read due to bad cast in stf_ioctl" dos multiple "Google Security Research"
2019-05-21 "Apple macOS < 10.14.5 / iOS < 12.3 JavaScriptCore - AIR Optimization Incorrectly Removes Assignment to Register" dos multiple "Google Security Research"
2019-05-21 "Apple macOS < 10.14.5 / iOS < 12.3 JavaScriptCore - Loop-Invariant Code Motion (LICM) in DFG JIT Leaves Stack Variable Uninitialized" dos multiple "Google Security Research"
2019-05-21 "Apple macOS < 10.14.5 / iOS < 12.3 DFG JIT Compiler - 'HasIndexedProperty' Use-After-Free" dos multiple "Google Security Research"
2019-05-13 "Google Chrome V8 - Turbofan JSCallReducer::ReduceArrayIndexOfIncludes Out-of-Bounds Read/Write" dos multiple "Google Security Research"
2019-04-30 "Linux - Missing Locking Between ELF coredump code and userfaultfd VMA Modification" dos linux "Google Security Research"
2019-04-26 "systemd - DynamicUser can Create setuid Binaries when Assisted by Another Process" dos linux "Google Security Research"
2019-04-24 "Google Chrome 72.0.3626.121 / 74.0.3725.0 - 'NewFixedDoubleArray' Integer Overflow" remote multiple "Google Security Research"
2019-04-24 "VirtualBox 6.0.4 r128413 - COM RPC Interface Code Injection Host Privilege Escalation" local windows "Google Security Research"
2019-04-23 "Linux - 'page->_refcount' Overflow via FUSE" dos linux "Google Security Research"
2019-04-23 "Linux - Missing Locking in Siemens R3964 Line Discipline Race Condition" dos linux "Google Security Research"
2019-04-23 "systemd - Lack of Seat Verification in PAM Module Permits Spoofing Active Session to polkit" dos linux "Google Security Research"
2019-04-17 "Oracle Java Runtime Environment - Heap Corruption During TTF font Rendering in GlyphIterator::setCurrGlyphID" dos multiple "Google Security Research"
2019-04-17 "Oracle Java Runtime Environment - Heap Corruption During TTF font Rendering in sc_FindExtrema4" dos multiple "Google Security Research"
2019-04-16 "Microsoft Windows 10 1809 - LUAFV PostLuafvPostReadWrite SECTION_OBJECT_POINTERS Race Condition Privilege Escalation" local windows "Google Security Research"
2019-04-16 "Microsoft Windows 10 1809 - LUAFV Delayed Virtualization Cache Manager Poisoning Privilege Escalation" local windows "Google Security Research"
2019-04-16 "Microsoft Windows 10 1809 - LUAFV NtSetCachedSigningLevel Device Guard Bypass" local windows "Google Security Research"
2019-04-16 "Microsoft Windows 10 1809 - LUAFV LuafvCopyShortName Arbitrary Short Name Privilege Escalation" local windows "Google Security Research"
2019-04-16 "Microsoft Windows 10 1809 - LUAFV Delayed Virtualization Cross Process Handle Duplication Privilege Escalation" local windows "Google Security Research"
2019-04-16 "Microsoft Windows 10 1809 - LUAFV Delayed Virtualization MAXIMUM_ACCESS DesiredAccess Privilege Escalation" local windows "Google Security Research"
2019-04-16 "Microsoft Windows 10 1809 / 1709 - CSRSS SxSSrv Cached Manifest Privilege Escalation" local windows "Google Security Research"
2019-04-03 "Google Chrome 72.0.3626.96 / 74.0.3702.0 - 'JSPromise::TriggerPromiseReactions' Type Confusion" remote multiple "Google Security Research"
2019-04-03 "Google Chrome 73.0.3683.39 / Chromium 74.0.3712.0 - 'ReadableStream' Internal Object Leak Type Confusion" dos multiple "Google Security Research"
import requests
response = requests.get('https://www.nmmapper.com/api/exploitdetails/46888/?format=json')
                                                {"url": "https://www.nmmapper.com/api/exploitdetails/46888/?format=json", "download_file": "https://www.nmmapper.com/st/exploitdetails/46888/41313/apple-macos-10145-ios-123-dfg-jit-compiler-hasindexedproperty-use-after-free/download/", "exploit_id": "46888", "exploit_description": "\"Apple macOS < 10.14.5 / iOS < 12.3 DFG JIT Compiler - 'HasIndexedProperty' Use-After-Free\"", "exploit_date": "2019-05-21", "exploit_author": "\"Google Security Research\"", "exploit_type": "dos", "exploit_platform": "multiple", "exploit_port": null}
                                            

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See also  https://bugs.chromium.org/p/project-zero/issues/detail?id=1699 for a similar issue.

The DFG JIT compiler attempts to determine whether a DFG IR operation could cause garbage collection (GC) during its execution [1]. With this, it is then possible for the compiler to determine whether there could be a GC between point A and point B in a function, which in turn can be used to omit write barriers (see e.g. https://v8.dev/blog/concurrent-marking#reducing-marking-pause for an explanation of write barriers) [2]. For example, in case an (incremental) GC cannot happen between an allocation of an object and a property store to it, the write barrier after the property store can be omitted (because in that case the newly allocated object could not already have been marked, so must be white). However, if the analysis is incorrect and a GC can happen in between, then the emitted code can cause use-after-free issues, e.g. if an unmarked (white) object is assigned as property to an object that was marked during an unexpected GC (and is thus black).

Since commit  9725889d5172a204aa1120e06be9eab117357f4b [3] "Add code to validate expected GC activity modelled by doesGC() against what the runtime encounters", JSC, in debug builds, asserts that the information computed by doesGC is correct: "In DFG::SpeculativeJIT::compile() and FTL::LowerDFGToB3::compileNode(), before emitting code / B3IR for each DFG node, we emit a write to set Heap::m_expectDoesGC to the value returned by doesGC() for that node. In the runtime (i.e. in allocateCell() and functions that can resolve a rope), we assert that Heap::m_expectDoesGC is true.". The following sample (found through fuzzing and then simplified), triggers such an assertion:

    function f(a) {
        return 0 in a;
    }
    for (let i = 0; i < 100000; i++) {
        const s = new String('asdf');
        s[42] = 'x';                   // Give it ArrayStorage
        f(s);
    }

Here, the `in` operation is converted to a HasIndexedProperty DFG operation [4]. Since the String object has ArrayStorage (due to the additional element), DFGClobberize will report that it does not write to the heap [5]. Afterwards, doesGC reports that the operation cannot trigger GC [6]. However, during the execution of the operation (in the DFG JIT implemented by a call to operationHasIndexedPropertyByInt [7]) the code ends up in JSString::getIndex (to determine whether the index is valid in the underlying string), which can end up flattening a rope string, thus causing a heap allocation and thus potentially causing garbage collection. This is where, in debug builds, the assertion fails:

    ASSERTION FAILED: vm()->heap.expectDoesGC()
    ../../Source/JavaScriptCore/runtime/JSString.h(1023) : WTF::StringView JSC::JSString::unsafeView(JSC::ExecState *) const
    1   0x10d67e769 WTFCrash
    2   0x10bb6948b WTFCrashWithInfo(int, char const*, char const*, int)
    3   0x10bba9e59 JSC::JSString::unsafeView(JSC::ExecState*) const
    4   0x10bba9c6e JSC::JSString::getIndex(JSC::ExecState*, unsigned int)
    5   0x10c712a24 JSC::JSString::getStringPropertySlot(JSC::ExecState*, unsigned int, JSC::PropertySlot&)
    6   0x10d330b90 JSC::StringObject::getOwnPropertySlotByIndex(JSC::JSObject*, JSC::ExecState*, unsigned int, JSC::PropertySlot&)
    7   0x10bbaa368 JSC::JSObject::getPropertySlot(JSC::ExecState*, unsigned int, JSC::PropertySlot&)
    8   0x10d20d831 JSC::JSObject::hasPropertyGeneric(JSC::ExecState*, unsigned int, JSC::PropertySlot::InternalMethodType) const
    9   0x10c70132f operationHasIndexedPropertyByInt