All Intel chips open to new Spoiler non-Spectre attack

Brink

Staff member
mvp
Researchers have discovered a new flaw affecting all Intel chips due to the way they carry out speculative execution for CPU performance gains.

Like the Spectre and Meltdown attacks revealed in January 2018, Spoiler also abuses speculative execution in Intel chips to leak secrets.

However, it targets a different area of the processor called the Memory Order Buffer, which is used to manage memory operations and is tightly coupled with the cache.

Researchers from Worcester Polytechnic Institute, Massachusetts, and the University of Lübeck in north Germany detail the attack in a new paper, 'Spoiler: Speculative load hazards boost Rowhammer and cache attacks'. The paper was released this month and spotted by The Register.

The researchers explain that Spoiler is not a Spectre attack, so it is not affected by Intel's mitigations for it, which otherwise can prevent other Spectre-like attacks such as SplitSpectre.

"The root cause for Spoiler is a weakness in the address speculation of Intel's proprietary implementation of the memory subsystem, which directly leaks timing behavior due to physical address conflicts. Existing Spectre mitigations would therefore not interfere with Spoiler," they write...


Read more: All Intel chips open to new Spoiler non-Spectre attack: Don't expect a quick fix | ZDNet

More: SPOILER alert, literally: Intel CPUs afflicted with simple data-spewing spec-exec vulnerability The Register
 

My Computers

System One System Two

  • Operating System
    Windows 10 Pro 64-bit
    Manufacturer/Model
    Custom
    CPU
    Intel i7-8700K 5 GHz
    Motherboard
    ASUS ROG Maximus XI Formula Z390
    Memory
    16 GB (8GBx2) G.SKILL TridentZ DDR4 3200 MHz
    Graphics Card(s)
    ASUS ROG-STRIX-GTX1080TI-O11G-GAMING
    Sound Card
    Integrated Digital Audio (S/PDIF)
    Monitor(s) Displays
    3 x 27" Asus VE278Q
    Screen Resolution
    1920x1080
    Hard Drives
    250GB Samsung 960 EVO M.2,
    256GB OCZ Vector,
    6TB WD Black WD6001FZWX
    8TB WD MyCloudEX2Ultra NAS
    PSU
    Seasonic Prime Titanium 850W
    Case
    Thermaltake Core P3
    Cooling
    Corsair Hydro H115i
    Mouse
    Logitech MX Master
    Keyboard
    Logitech wireless K800
    Internet Speed
    1 Gb/s Download and 35 Mb/s Upload
    Other Info
    Logitech Z625 speaker system,
    Logitech BRIO 4K Pro webcam,
    HP Color LaserJet Pro MFP M477fdn,
    Linksys EA9500 router,
    Arris SB8200 cable modem,
    APC SMART-UPS RT 1000 XL - SURT1000XLI,
    Lumia 1520 phone
  • Operating System
    Windows 10 Pro
    Manufacturer/Model
    HP Envy Y0F94AV
    CPU
    i7-7500U @ 2.70 GHz
    Memory
    16 GB DDR4-2133
    Graphics card(s)
    NVIDIA GeForce 940MX
    Sound Card
    Conexant ISST Audio
    Monitor(s) Displays
    17.3" UHD IPS touch
    Screen Resolution
    3480 x 2160
    Hard Drives
    512 GB M.2 SSD
Top