Product:

Grub2

(Gnu)
Repositories

Unknown:

This might be proprietary software.
#Vulnerabilities 33
Date Id Summary Products Score Patch Annotated
2020-07-29 CVE-2020-15705 GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim. This issue affects GRUB2 version 2.04 and prior versions. Ubuntu_linux, Debian_linux, Grub2, Windows_10, Windows_8\.1, Windows_rt_8\.1, Windows_server_2012, Windows_server_2016, Windows_server_2019, Leap, Enterprise_linux, Enterprise_linux_atomic_host, Openshift_container_platform, Suse_linux_enterprise_server 6.4
2020-07-29 CVE-2020-15706 GRUB2 contains a race condition in grub_script_function_create() leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2 version 2.04 and prior versions. Ubuntu_linux, Debian_linux, Grub2, Windows_10, Windows_8\.1, Windows_rt_8\.1, Windows_server_2012, Windows_server_2016, Windows_server_2019, Leap, Enterprise_linux, Enterprise_linux_atomic_host, Openshift_container_platform, Suse_linux_enterprise_server 6.4
2020-07-29 CVE-2020-15707 Integer overflows were discovered in the functions grub_cmd_initrd and grub_initrd_init in the efilinux component of GRUB2, as shipped in Debian, Red Hat, and Ubuntu (the functionality is not included in GRUB2 upstream), leading to a heap-based buffer overflow. These could be triggered by an extremely large number of arguments to the initrd command on 32-bit architectures, or a crafted filesystem with very large files on any architecture. An attacker could use this to execute arbitrary code... Ubuntu_linux, Debian_linux, Grub2, Windows_10, Windows_8\.1, Windows_rt_8\.1, Windows_server_2012, Windows_server_2016, Windows_server_2019, Active_iq_unified_manager, Leap, Enterprise_linux, Enterprise_linux_atomic_host, Openshift_container_platform, Suse_linux_enterprise_server 6.4
2020-07-29 CVE-2020-14308 In grub2 versions before 2.06 the grub memory allocator doesn't check for possible arithmetic overflows on the requested allocation size. This leads the function to return invalid memory allocations which can be further used to cause possible integrity, confidentiality and availability impacts during the boot process. Grub2, Leap 6.4
2020-07-30 CVE-2020-14309 There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data. Grub2, Leap 6.7
2020-07-31 CVE-2020-14310 There is an issue on grub2 before version 2.06 at function read_section_as_string(). It expects a font name to be at max UINT32_MAX - 1 length in bytes but it doesn't verify it before proceed with buffer allocation to read the value from the font value. An attacker may leverage that by crafting a malicious font file which has a name with UINT32_MAX, leading to read_section_as_string() to an arithmetic overflow, zero-sized allocation and further heap-based buffer overflow. Ubuntu_linux, Grub2, Leap, Enterprise_linux, Enterprise_linux_eus, Enterprise_linux_server_aus, Enterprise_linux_server_tus 6.0
2020-07-31 CVE-2020-14311 There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow. Ubuntu_linux, Grub2, Leap, Enterprise_linux, Enterprise_linux_eus, Enterprise_linux_server_aus, Enterprise_linux_server_tus 6.0
2021-03-03 CVE-2020-27749 A flaw was found in grub2 in versions prior to 2.06. 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 a sufficiently large payload, it is possible to overflow the stack buffer, corrupt the stack frame and control execution which could also circumvent Secure Boot... Fedora, Grub2, Ontap_select_deploy_administration_utility, Enterprise_linux, Enterprise_linux_server_aus, Enterprise_linux_server_eus, Enterprise_linux_server_tus, Enterprise_linux_workstation 6.7
2021-03-03 CVE-2020-14372 A flaw was found in grub2 in versions prior to 2.06, 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 directly into memory. The table is further loaded and executed by the kernel, defeating its Secure Boot lockdown and allowing the attacker to load unsigned code. The highest... Fedora, Grub2, Cloud_backup, Ontap_select_deploy_administration_utility, Enterprise_linux, Enterprise_linux_server_aus, Enterprise_linux_server_eus, Enterprise_linux_server_tus, Enterprise_linux_workstation 7.5
2021-03-03 CVE-2020-25632 A flaw was found in grub2 in versions prior to 2.06. 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 highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. Fedora, Grub2, Ontap_select_deploy_administration_utility, Enterprise_linux, Enterprise_linux_server_aus, Enterprise_linux_server_eus, Enterprise_linux_server_tus, Enterprise_linux_workstation 8.2