Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : Intel Microcode vulnerabilities (USN-3756-1)

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3756-1 advisory. It was discovered that memory present in the L1 data cache of an Intel CPU core may be exposed to a malicious process that is...

Ubuntu: Security Advisory (USN-3756-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2018 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

USN-3756-1 intel-microcode vulnerabilities

It was discovered that memory present in the L1 data cache of an Intel CPU core may be exposed to a malicious process that is executing on the CPU core. This vulnerability is also known as L1 Terminal Fault L1TF. A local attacker in a guest virtual machine could use this to expose sensitive...

USN-3756-1: Intel Microcode vulnerabilities

It was discovered that memory present in the L1 data cache of an Intel CPU core may be exposed to a malicious process that is executing on the CPU core. This vulnerability is also known as L1 Terminal Fault L1TF. A local attacker in a guest virtual machine could use this to expose sensitive...

Threat Analysis: Recent Attack Technique Leveraging cmd.exe and PowerShell Demonstrates How Attackers Are Using Trusted Microsoft Applications for Malicious Behavior

An attack leveraging cmd.exe and PowerShell was recently investigated by Cb ThreatSight analysts. Our initial investigation discovered that a batch file was executed on the targeted system. This batch file then invoked PowerShell with a base64 encoded command. Decoding the command revealed a seri...

Vulnerability hunting with Semmle QL, part 1

Previously on this blog, we’ve talked about how MSRC automates the root cause analysis of vulnerabilities reported and found. After doing this, our next step is variant analysis: finding and investigating any variants of the vulnerability. It’s important that we find all such variants and patch...

Vulnerability hunting with Semmle QL, part 1

Previously on this blog, we’ve talked about how MSRC automates the root cause analysis of vulnerabilities reported and found. After doing this, our next step is variant analysis: finding and investigating any variants of the vulnerability. It’s important that we find all such variants and patch...

Patch Tuesday: Microsoft Addresses Two Zero-Days in 60-Flaw Roundup

Microsoft has rolled out its August Patch Tuesday fixes, addressing 19 critical vulnerabilities, including fixes for two zero-day vulnerabilities that are under active attack. Overall, the company patched a total of 60 flaws, spanning Microsoft Windows, Edge, Internet Explorer IE, Office, .NET...

Description of the security update for the L1TF variant vulnerabilities in Windows Server 2008: August 14, 2018

Description of the security update for the L1TF variant vulnerabilities in Windows Server 2008: August 14, 2018 Summary On January 3, 2018, Microsoft released an advisory and security updates for a new class of hardware vulnerabilities involving speculative execution side channels known as Spectr...

August 14, 2018—KB4343897 (OS Build 16299.611)

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August 14, 2018—KB4343899 (Security-only update)

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August 14, 2018—KB4343887 (OS Build 14393.2430)

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August 14, 2018—KB4343888 (Security-only update)

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August 14, 2018—KB4343892 (OS Build 10240.17946)

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Microsoft Guidance to mitigate L1TF variant

Executive Summary On January 3, 2018, Microsoft released an advisory and security updates for a new class of hardware vulnerabilities involving speculative execution side channels known as Spectre and Meltdown. Microsoft is aware of a new speculative execution side channel vulnerability known as ...

KeyPass ransomware

In the last few days, our anti-ransomware module has been detecting a new variant of malware - KeyPass ransomware. Others in the security community have also noticed that this ransomware began to actively spread in August: Notification from MalwareHunterTeam Distribution model According to our...

Security Bulletin: IBM Cloud Manager is affected by the vulnerabilities known as SpectreNG (CVE-2018-3639)

Summary A third party CPU hardware utilizing speculative execution may be vulnerable to cache timing side-channel analysis known as Variant 4 or SpectreNG. These vulnerabilities have been referred to as part of "SpectreNG" in the media, given their similarity to previously disclosed...

TSMC Chip Maker Blames WannaCry Malware for Production Halt

Taiwan Semiconductor Manufacturing Company TSMC—the world's largest makers of semiconductors and processors—was forced to shut down several of its chip-fabrication factories over the weekend after being hit by a computer virus. Now, it turns out that the computer virus outbreak at Taiwan chipmake...

[slackware-security] Slackware 14.2 kernel

New kernel packages are available for Slackware 14.2 to fix security issues. Here are the details from the Slackware 14.2 ChangeLog: patches/packages/linux-4.4.144/: Upgraded. This kernel update enables additional mitigations for spectrev2 IBPB and IBRSFW. It also enables reporting on the...

NetSpectre — New Remote Spectre Attack Steals Data Over the Network

A team of security researchers has discovered a new Spectre attack that can be launched over the network, unlike all other Spectre variants that require some form of local code execution on the target system. Dubbed "NetSpectre ," the new remote side-channel attack, which is related to Spectre...