Security feature bypass

A security feature bypass exists when Windows incorrectly validates kernel driver signatures, aka "Windows Security Feature Bypass Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2012, Windows Server 2019, Windows Server 2016, Windows 8.1, Windows 10, Windows 1...

CVE-2018-8549

A security feature bypass exists when Windows incorrectly validates kernel driver signatures, aka "Windows Security Feature Bypass Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2012, Windows Server 2019, Windows Server 2016, Windows 8.1, Windows 10, Windows 1...

CVE-2018-8549: Undefined Security Weakness

A security feature bypass exists when Windows incorrectly validates kernel driver signatures, aka "Windows Security Feature Bypass Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2012, Windows Server 2019, Windows Server 2016, Windows 8.1, Windows 10, Windows 1...

Windows Security Feature Bypass Vulnerability

A security feature bypass exists when Windows incorrectly validates kernel driver signatures. An attacker who successfully exploited this vulnerability could bypass security features and load improperly signed drivers into the kernel. In an attack scenario, an attacker could bypass security...

KB4467691: Windows 10 Version 1607 and Windows Server 2016 November 2018 Security Update

The remote Windows host is missing security update 4467691. It is, therefore, affected by multiple vulnerabilities : - A security feature bypass vulnerability exists in Microsoft JScript that could allow an attacker to bypass Device Guard. CVE-2018-8417 - A remote code execution vulnerability...

Emotet Campaign Ramps Up with Mass Email Harvesting Module

A large-scale spam campaign has launched, spreading the Emotet banking trojan. Worryingly, the offensive has launched about a week after a fresh module for mass email-harvesting was detected for the malware. Emotet is technically a banking trojan, but it’s most often used as a dropper for a varie...

Amazon Linux 2 : openssl (ALAS-2018-1102)

During key agreement in a TLS handshake using a DHE based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This...

Code injection

In sigverify in x509.c in axTLS version 2.1.3 and before, the PKCS1 v1.5 signature verification does not properly verify the ASN.1 metadata. Consequently, a remote attacker can forge signatures when small public exponents are being used, which could lead to impersonation through fake X.509...

CVE-2018-16150

In sigverify in x509.c in axTLS version 2.1.3 and before, the PKCS1 v1.5 signature verification does not reject excess data after the hash value. Consequently, a remote attacker can forge signatures when small public exponents are being used, which could lead to impersonation through fake X.509...

CVE-2018-16150

Removed by vendor...

Medium: openssl

Issue Overview: During key agreement in a TLS handshake using a DHE based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client ha...

Ubuntu: Security Advisory (USN-3397-1)

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...

[slackware-security] libssh

New libssh packages are available for Slackware 14.0, 14.1, 14.2, and -current to fix a security issue. Here are the details from the Slackware 14.2 ChangeLog: patches/packages/libssh-0.7.6-i586-1slack14.2.txz: Upgraded. Fixed authentication bypass vulnerability. For more information, see:...

Cisco IOS XE Image File Verification Digital Signature

The vulnerability of the Cisco IOS XE operating system’s image file verification function arises due to errors in verifying the digital signatures of the files uploaded to the device. Exploiting this vulnerability allows a malicious actor to install malware on vulnerable devices...

Fileless malware: part deux

In part one of this series, we focused on an introduction to the concepts fileless malware, providing examples of the problems that we in the security industry face when dealing with these types of attacks. In part two, I will be walking through a few demonstrations of fileless malware attacks th...

CVE-2018-15374

A vulnerability in the Image Verification feature of Cisco IOS XE Software could allow an authenticated, local attacker to install a malicious software image or file on an affected device. The vulnerability is due to the affected software improperly verifying digital signatures for software image...

Design/Logic Flaw

A vulnerability in the Image Verification feature of Cisco IOS XE Software could allow an authenticated, local attacker to install a malicious software image or file on an affected device. The vulnerability is due to the affected software improperly verifying digital signatures for software image...

CVE-2018-15374

CVE-2018-15374 describes a digital signature verification bypass in the Cisco IOS XE Software Image Verification feature. An authenticated, local attacker could upload a legitimate-looking but malicious software image or file to an affected device, exploiting improper verification to bypass signa...

Tools to address OWASP Top 10 Risks

In a recent article published by Security Boulevard. we talked about OWASP Top 10 Risk classification and overlap. In this post, we will look into the tools that may help address these risks. To understand what’s possible to cover with which protection mechanisms we can now color-code our OWASP...

CVE-2018-16152

In verifyemsapkcs1signature in gmprsapublickey.c in the gmp plugin in strongSwan 4.x and 5.x before 5.7.0, the RSA implementation based on GMP does not reject excess data in the digestAlgorithm.parameters field during PKCS1 v1.5 signature verification. Consequently, a remote attacker can forge...