AMD / ARM / Intel - Speculative Execution Variant 4 Speculative Store Bypass Exploit

Exploit for hardware platform in category dos / poc / ======== Intro / Overview ======== After Michael Schwarz made some interesting observations, we started looking into variants other than the three already-known ones. I noticed that Intel's Optimization Manual says in section 2.4.4.5 "Memory...

AMD / ARM / Intel - Speculative Execution Variant 4 Speculative Store Bypass

/ ======== Intro / Overview ======== After Michael Schwarz made some interesting observations, we started looking into variants other than the three already-known ones. I noticed that Intel's Optimization Manual says in section 2.4.4.5 "Memory Disambiguation": A load instruction micro-op may depe...

Design/Logic Flaw

kernel KVM before versions kernel 4.16, kernel 4.16-rc7, kernel 4.17-rc1, kernel 4.17-rc2 and kernel 4.17-rc3 is vulnerable to a flaw in the way the Linux kernel's KVM hypervisor handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch...

Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4098)

The remote Oracle Linux 6 / 7 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2018-4098 advisory. kernel-uek 3.8.13-118.20.7 - x86/entry/64: Dont use IST entry for BP stack Andy Lutomirski CVE-2018-8897 Tenable has extracted the preceding description blo...

Kernel: KVM: error in exception handling leads to wrong debug stack value

A flaw was found in the way the Linux kernel's KVM hypervisor handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first...

CVE-2018-8897

A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual SDM was mishandled in the development of some or all operating-system kernels, resulting in unexpected behavior for DB exceptions that are deferred by MOV SS or POP SS, as demonstrated ...

CVE-2018-8897

A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual SDM was mishandled in the development of some or all operating-system kernels, resulting in unexpected behavior for DB exceptions that are deferred by MOV SS or POP SS, as demonstrated ...

CVE-2018-8897

A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual SDM was mishandled in the development of some or all operating-system kernels, resulting in unexpected behavior for DB exceptions that are deferred by MOV SS or POP SS, as demonstrated ...

CVE-2018-8897

A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual SDM was mishandled in the development of some or all operating-system kernels, resulting in unexpected behavior for DB exceptions that are deferred by MOV SS or POP SS, as demonstrated ...

CVE-2018-8897

A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual SDM was mishandled in the development of some or all operating-system kernels, resulting in unexpected behavior for DB exceptions that are deferred by MOV SS or POP SS, as demonstrated ...

PT-2018-1250

Name of the Vulnerable Software and Affected Versions Android versions prior to 2018-04-05 Description The issue is related to improper handling of simultaneous interrupts in the USB module during USB RESET and EP COMPLETE, which can be exploited by a remote attacker to impact the confidentiality...

Unbreakable Enterprise kernel security update

4.1.12-112.14.10 - x86/ia32: save and clear registers on syscall. Jamie Iles Orabug: 27355759 CVE-2017-5754 - x86/IBRS: Save current status of MSRIA32SPECCTRL Boris Ostrovsky Orabug: 27355887 - pti: Rename X86FEATUREKAISER to X86FEATUREPTI Pavel Tatashin Orabug: 27352353 CVE-2017-5754 - usb/core:...

SUSE SLES12 Security Update : xen (SUSE-SU-2017:2873-1)

This update for xen fixes several issues: These security issues were fixed : - CVE-2017-5526: The ES1370 audio device emulation support was vulnerable to a memory leakage issue allowing a privileged user inside the guest to cause a DoS and/or potentially crash the Qemu process on the host...

SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2017:2864-1)

This update for xen fixes several issues: These security issues were fixed : - CVE-2017-5526: The ES1370 audio device emulation support was vulnerable to a memory leakage issue allowing a privileged user inside the guest to cause a DoS and/or potentially crash the Qemu process on the host...

CVE-2017-12154

Linux kernel built with the KVM visualization support CONFIGKVM, with nested visualization nVMX feature enabled nested=1, is vulnerable to a crash due to disabled external interrupts. As L2 guest could access r/w hardware CR8 register of the hostL0. In a nested visualization setup, L2 guest user...

ALPINE-CVE-2017-10919

Xen through 4.8.x mishandles virtual interrupt injection, which allows guest OS users to cause a denial of service hypervisor crash, aka XSA-223...

Reverse Engineering MacOS: HookCase

Reverse Engineering MacOS HookCase is a tool for debugging and reverse engineering applications on macOS aka OS X, and the operating system itself. It re-implements and extends Apple’s DYLDINSERTLIBRARIES functionality . It can be used to hook any method defined in any module’s symbol table,...

UBUNTU-CVE-2016-9377

Xen 4.5.x through 4.7.x on AMD systems without the NRip feature, when emulating instructions that generate software interrupts, allows local HVM guest OS users to cause a denial of service guest crash by leveraging IDT entry miscalculation...

CVE-2016-9378

CVE-2016-9378 affects Xen 4.5.x–4.7.x on AMD systems without NRip. When emulating instructions that generate software interrupts, Xen may incorrectly use the interrupt-delivery method intended for 32-bit guests, causing a guest crash. This is a local, guest-initiated DoS through incorrect softwar...

Fedora 25 : xen (2016-92e3ea2d1b)

two security flaws 1406840 x86 PV guests may be able to mask interrupts XSA-202, CVE-2016-10024 x86: missing NULL pointer check in VMFUNC emulation XSA-203, CVE-2016-10025 x86: Mishandling of SYSCALL singlestep during emulation XSA-204, CVE-2016-10013 1406260 Note that Tenable Network Security ha...