initroot: Bypassing Nexus 6 Secure Boot through Kernel Command-line Injection

In the May 2017 Android Security Bulletin, Google released a patch to a critical and unique vulnerability CVE-2016-10277 in the Nexus 6 bootloader we had found and responsibly disclosed. By exploiting the vulnerability, a physical adversary or one with authorized-ADB/fastboot USB access to the...

Fedora 24 : calamares (2016-5c7e9b8778)

A security update that fixes Calamares bug CAL-405: https://calamares.io/bugs/browse/CAL-405 When installing with a LUKS-encrypted / partition, Calamares was always creating a keyfile to decode / and storing it in the initramfs. It did that even with an unencrypted separate /boot partition. As a...

Fedora 25 : calamares (2016-561a937494)

A security update that fixes Calamares bug CAL-405: https://calamares.io/bugs/browse/CAL-405 When installing with a LUKS-encrypted / partition, Calamares was always creating a keyfile to decode / and storing it in the initramfs. It did that even with an unencrypted separate /boot partition. As a...

Fedora 25 : dracut (2016-cc5006bef7)

fixed permissions of initramfs file, if microcode is prepended CVE-2016-8637 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without...

[SECURITY] Fedora 25 Update: dracut-044-78.fc25

dracut contains tools to create a bootable initramfs for 2.6 Linux kernels. Unlike existing implementations, dracut does hard-code as little as possible into the initramfs. dracut contains various modules which are driven by the event-based udev. Having root on MD, DM, LVM2, LUKS is supported as...

Updated dracut packages fix security vulnerability

A local information disclosure issue was found in dracut when generating initramfs images with world-readable permissions when "early cpio" is used, such as when including microcode updates. Local attacker can use this to obtain sensitive information from these files, such as encryption keys or...

Cryptsetup Initrd LUKS Root Shell Elevation of Privilege Vulnerability

cryptsetup is a tool that implements the LUKS Linux Unified Key Setup specification, which is the Linux hard disk encryption specification. A local elevation of privilege vulnerability exists in Cryptsetup, which can be exploited to corrupt Linux boxes by pressing the Enter key for 70 seconds to...

Cryptsetup Initrd LUKS root Shell privilege escalation vulnerability

Description A vulnerability in Cryptsetup, concretely in the scripts that unlock the system partition when the partition is ciphered using LUKS Linux Unified Key Setup. The disclosure of this vulnerability was presented as part of our talk "Abusing LUKS to Hack the System" in the DeepSec 2016...

Cryptsetup Vulnerability Grants Root Shell Access on Some Linux Systems

A vulnerability in cryptsetup, a utility used to set up encrypted filesystems on Linux distributions, could allow an attacker to retrieve a root rescue shell on some systems. From there, an attacker could have the ability to copy, modify, or destroy a hard disk, or use the network to exfiltrate...

[SECURITY] Fedora 24 Update: dracut-044-21.fc24

dracut contains tools to create a bootable initramfs for 2.6 Linux kernels. Unlike existing implementations, dracut does hard-code as little as possible into the initramfs. dracut contains various modules which are driven by the event-based udev. Having root on MD, DM, LVM2, LUKS is supported as...

Dracut Local Information Disclosure Vulnerability

Dracut is an initramfs infrastructure that is primarily used to create initramfs images. Dracut suffers from a local information disclosure vulnerability that can be exploited by an attacker to obtain sensitive information...

CVE-2016-8637

A local information disclosure issue was found in dracut before 045 when generating initramfs images with world-readable permissions when 'early cpio' is used, such as when including microcode updates. Local attacker can use this to obtain sensitive information from these files, such as encryptio...

initramfs-tools未明安全漏洞

Bugtraq ID:66414 initramfs-tools是一款linux下生成initramfs的工具。 initramfs-tools没有用noexec选项不正确安装/run，可导致不明漏洞。 0 initramfs-tools Ubuntu linux用户可参考如下厂商提供的安全公告获得补丁信息： http://www.ubuntu.com/usn/usn-2153-1/...

initramfs-tools weak permissions

/run is mounted withour noexec option...

Ubuntu 12.04 LTS / 12.10 : initramfs-tools vulnerability (USN-2153-1)

Kees Cook discovered that initramfs-tools incorrectly mounted /run without the noexec option, contrary to expected behaviour. Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean a...

[USN-2153-1] initramfs-tools vulnerability

========================================================================== Ubuntu Security Notice USN-2153-1 March 24, 2014 initramfs-tools vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivative...

Ubuntu Update for initramfs-tools USN-2153-1

Check for the Version of initramfs-tools OpenVAS Vulnerability Test $Id: gbubuntuUSN21531.nasl 7957 2017-12-01 06:40:08Z santu $ Ubuntu Update for initramfs-tools USN-2153-1 Authors: System Generated Check Copyright: Copyright C 2014 Greenbone Networks GmbH, http://www.greenbone.net This program ...

Ubuntu: Security Advisory (USN-2153-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2014 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-2153-1: initramfs-tools vulnerability

Kees Cook discovered that initramfs-tools incorrectly mounted /run without the noexec option, contrary to expected behaviour...

Medium: dracut

Issue Overview: It was discovered that dracut created initramfs images as world readable. A local user could possibly use this flaw to obtain sensitive information from these files, such as iSCSI authentication passwords, encrypted root file system crypttab passwords, or other information...