10997 matches found
Researchers Discover UEFI Bootkit Targeting Windows Computers Since 2012
Cybersecurity researchers on Tuesday revealed details of a previously undocumented UEFI Unified Extensible Firmware Interface bootkit that has been put to use by threat actors to backdoor Windows systems as early as 2012 by modifying a legitimate Windows Boot Manager binary to achieve persistence...
grub2 bug fix and enhancement update
An update for grub2 is now available for Rocky Linux 8. The grub2 packages provide version 2 of the Grand Unified Boot Loader GRUB, a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures,...
grub2: Stack buffer overflow in grub_parser_split_cmdline()
A flaw was found in grub2. Variable names present are expanded in the supplied command line into their corresponding variable contents, using a 1kB stack buffer for temporary storage, without sufficient bounds checking. If the function is called with a command line that references a variable with...
grub2: Use-after-free in rmmod command
A flaw was found in grub2. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The...
Moderate: Red Hat Security Advisory: shim and fwupd security update
An update for fwupd, shim, shim-unsigned-aarch64, and shim-unsigned-x64 is now available for Red Hat Enterprise Linux 8.1 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which...
grub2: Out-of-bounds write in grub_usb_device_initialize()
A flaw was found in grub2. During USB device initialization, descriptors are read with very little bounds checking and assumes the USB device is providing sane values. If properly exploited, an attacker could trigger memory corruption leading to arbitrary code execution allowing a bypass of the...
grub2: acpi command allows privileged user to load crafted ACPI tables when Secure Boot is enabled
A flaw was found in GRUB 2, where it incorrectly enables the usage of the ACPI command when Secure Boot is enabled. This flaw allows an attacker with privileged access to craft a Secondary System Description Table SSDT containing code to overwrite the Linux kernel lockdown variable content direct...
grub2: cutmem command allows privileged user to remove memory regions when Secure Boot is enabled
A flaw was found in grub2. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub's memory layout. The highest threat from this...
RHEL 8 : shim and fwupd (RHSA-2021:3675)
The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:3675 advisory. The shim package contains a first-stage UEFI boot loader that handles chaining to a trusted full boot loader under secure boot environments...
grub2 bug fix and enhancement update
The grub2 packages provide version 2 of the Grand Unified Boot Loader GRUB, a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. Bug Fixes and Enhancements: Make...
GHSA-F6JP-J6W3-W9HM Apache Shiro vulnerable to a specially crafted HTTP request causing an authentication bypass
Apache Shiro before 1.8.0, when using Apache Shiro with Spring Boot, a specially crafted HTTP request may cause an authentication bypass. Users should update to Apache Shiro 1.8.0...
Apache Shiro vulnerable to a specially crafted HTTP request causing an authentication bypass
Apache Shiro before 1.8.0, when using Apache Shiro with Spring Boot, a specially crafted HTTP request may cause an authentication bypass. Users should update to Apache Shiro 1.8.0...
Authentication Bypass
Apache Shiro Web is vulnerable to authentication bypass. An unhandled HTTP request causes an authentication bypass while using it with Spring Boot...
Citrix Provisioning Services - vDisk Version Promotion Results In Failed Boot
After a vDisk version promotion Target Devices cannot successfully boot from the version. The Target might BSOD or hang at the UEFI splash screen. The vDisk version promotion prior to attempting to boot a device may appear to take a long time or cause a console error. The Provisioning servers fro...
CVE-2021-41303
Apache Shiro before 1.8.0, when using Apache Shiro with Spring Boot, a specially crafted HTTP request may cause an authentication bypass. Users should update to Apache Shiro 1.8.0...
CVE-2021-41303
Apache Shiro before 1.8.0, when using Apache Shiro with Spring Boot, a specially crafted HTTP request may cause an authentication bypass. Users should update to Apache Shiro 1.8.0...
DEBIAN-CVE-2021-41303
Apache Shiro before 1.8.0, when using Apache Shiro with Spring Boot, a specially crafted HTTP request may cause an authentication bypass. Users should update to Apache Shiro 1.8.0...
CVE-2021-41303
Apache Shiro before 1.8.0, when using Apache Shiro with Spring Boot, a specially crafted HTTP request may cause an authentication bypass. Users should update to Apache Shiro 1.8.0...
