Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4094-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4094-1 advisory. It was discovered that the alarmtimer implementation in the Linux kernel contained an integer overflow vulnerability. A local attacker could...

USN-4095-2: Linux kernel (Xenial HWE) vulnerabilities

USN-4095-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 ESM. Eli Biham and Lior Neumann discovered that the Bluetooth implementation in the Linux...

USN-4096-1: Linux kernel (AWS) vulnerability

Andrei Vlad Lutas and Dan Lutas discovered that some x86 processors incorrectly handle SWAPGS instructions during speculative execution. A local attacker could use this to expose sensitive information kernel memory...

USN-4095-1: Linux kernel vulnerabilities

Eli Biham and Lior Neumann discovered that the Bluetooth implementation in the Linux kernel did not properly validate elliptic curve parameters during Diffie-Hellman key exchange in some situations. An attacker could use this to expose sensitive information. CVE-2018-5383 It was discovered that a...

USN-4094-1: Linux kernel vulnerabilities

It was discovered that the alarmtimer implementation in the Linux kernel contained an integer overflow vulnerability. A local attacker could use this to cause a denial of service. CVE-2018-13053 Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly track...

Xen Project Microarchitectural Data Sampling Speculative Side-Channel Vulnerabilities (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout) (XSA-297)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by microarchitectural data sampling speculative side-channel vulnerabilities. These vulnerabilities may allow a local attacker on a guest machine to sample the contents of memory reads and...

Microarchitectural Data Sampling speculative side channel

ISSUE DESCRIPTION Microarchitectural Data Sampling refers to a group of speculative sidechannels vulnerabilities. They consist of: CVE-2018-12126 - MSBDS - Microarchitectural Store Buffer Data Sampling CVE-2018-12127 - MLPDS - Microarchitectural Load Port Data Sampling CVE-2018-12130 - MFBDS -...

Cache-load gadgets exploitable with L1TF

ISSUE DESCRIPTION Previously reported vulnerabilities CVE-2017-5753 / XSA-254 Spectre V1 and CVE-2018-3646 / XSA-273 L1TF can, when combined, be leveraged to more easily gather leaked information. A Spectre v1 gadget is a speculation sequence which starts with a conditional branch, contains a...

The x86 Processor Fuzzer: sandsifter

Your computer is not yours. You may have shelled out thousands of dollars for it. It may be sitting right there on your desk. You may have carved your name deep into its side with a blowtorch and chisel. But it’s still not yours. Some vendors are building secret processor registers into your...

Sandsifter - The X86 Processor Fuzzer

The sandsifter audits x86 processors for hidden instructions and hardware bugs, by systematically generating machine code to search through a processor's instruction set, and monitoring execution for anomalies. Sandsifter has uncovered secret processor instructions from every major vendor;...

Debian DLA-1423-1 : linux-4.9 new package (Spectre)

Linux 4.9 has been packaged for Debian 8 as linux-4.9. This provides a supported upgrade path for systems that currently use kernel packages from the 'jessie-backports' suite. There is no need to upgrade systems using Linux 3.16, as that kernel version will also continue to be supported in the LT...

Debian DLA-1422-2 : linux security update (Spectre)

The previous update to linux failed to build for the armhf ARM EABI hard-float architecture. This update corrects that. For all other architectures, there is no need to upgrade or reboot again. For reference, the relevant part of the original advisory text follows. Several vulnerabilities have be...

CVE-2018-3665

System software utilizing Lazy FP state restore technique on systems using Intel Core-based microprocessors may potentially allow a local process to infer data from another process through a speculative execution side channel...

Speculative register leakage from lazy FPU context switching

ISSUE DESCRIPTION x86 has a hardware mechanism for lazy FPU context switching. On a task switch, %cr0.ts Task Switched gets set, and the next instruction to touch floating point state raises an NM No Math, later known as Device Not Available exception. Traditionally, FPU state has been large in...

Libgcrypt Attack Allowed Recovery of RSA-1024 Keys

The cryptographic library Libgcrypt is vulnerable to a local side-channel attack; something researchers warn could allow full key recovery for RSA-1024. The vulnerability CVE-2017-7526 is tied to the fact that Libgcrypt, which is based on code from GnuPG, uses left to right sliding windows...

Intel Processor Memory Sinkhole Vulnerability

Lenovo Security Advisory: LEN-3748 Summary: Memory Sinkhole Vulnerability Description: In August 2015 at the Black Hat security conference, researcher Chris Domas presented a vulnerability found in Intel x86 processors manufactured between 1997 and 2010 prior to the Sandy Bridge generation. Throu...

Wine On Android For Running Windows Apps

As you know, many enthusiasts Android mobile users wishing for alternate of WINE software for Android mobiles or tablet as well, that allow applications designed for Microsoft Windows to run on Unix-like operating systems. Sounds Interesting ? Alexandre Julliard, the original developer behind the...

USN-1042-1: PHP vulnerabilities

It was discovered that an integer overflow in the XML UTF-8 decoding code could allow an attacker to bypass cross-site scripting XSS protections. This issue only affected Ubuntu 6.06 LTS, Ubuntu 8.04 LTS, and Ubuntu 9.10. CVE-2009-5016 It was discovered that the XML UTF-8 decoding code did not...