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...

CVE-2016-8637

The vulnerability CVE-2016-8637 affects dracut when generating initramfs images with world-readable permissions using the early cpio path, allowing local attackers to read sensitive data from initramfs files. The root cause is information disclosure via world-readable initramfs contents generated...

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...

Restored Linux Machine Fails to Boot

Challenge An issue with initiramfs may cause the restored Linux machine to fail to boot with the following symptoms: ForRHEL/CentOS/SUSE systems, during the boot process, they will drop into the dracut emergency shell and display errors similar to: dracut-initqueue timeout - starting timeout...

[SECURITY] Fedora 27 Update: dracut-046-8.git20180105.fc27

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...

[SECURITY] Fedora 26 Update: dracut-046-8.git20180105.fc26

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...

Motorola Bootloader - Kernel Cmdline Injection Secure Boot and Device Locking Bypass Exploit

Exploit for Android platform in category local exploits Sources: https://alephsecurity.com/2017/08/30/untethered-initroot/ https://github.com/alephsecurity/initroot initroot: Motorola Bootloader Kernel Cmdline Injection Secure Boot & Device Locking Bypass CVE-2016-10277 By Roee Hay / Aleph...

Motorola Bootloader - Kernel Cmdline Injection Secure Boot and Device Locking Bypass

Motorola Bootloader - Kernel Cmdline Injection Secure Boot and Device Locking Bypass Sources: https://alephsecurity.com/2017/08/30/untethered-initroot/ https://github.com/alephsecurity/initroot initroot: Motorola Bootloader Kernel Cmdline Injection Secure Boot & Device Locking Bypass CVE-2016-102...

Motorola G4 & G5 mobile phone was traced to the presence of high-risk kernel command line injection vulnerability-vulnerability warning-the black bar safety net

In a previous article about the Nexus6 root vulnerability in the article, we had mentioned Vulnerability CVE-2016-10277 will likely affect the Motorola device. When we on Twitter by some of the relevant reports after the fact to prove our previous conjecture. In order to prove that Motorola devic...

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...