CVSS: 7.5EPSS: 2%CPEs: 21EXPL: 1CVE-2020-14372 – grub2: acpi command allows privileged user to load crafted ACPI tables when Secure Boot is enabled
https://notcve.org/view.php?id=CVE-2020-14372
03 Mar 2021 — 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 threat from this vul... • https://github.com/kukrimate/CVE-2020-14372 • CWE-184: Incomplete List of Disallowed Inputs •
CVSS: 8.2EPSS: 0%CPEs: 20EXPL: 1CVE-2020-25632 – grub2: Use-after-free in rmmod command
https://notcve.org/view.php?id=CVE-2020-25632
03 Mar 2021 — 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. Se encontró un fallo en grub2 en versiones anteriores a 2.06. • https://github.com/pauljrowland/BootHoleFix • CWE-416: Use After Free •
CVSS: 7.6EPSS: 0%CPEs: 20EXPL: 0CVE-2020-25647 – grub2: Out-of-bounds write in grub_usb_device_initialize()
https://notcve.org/view.php?id=CVE-2020-25647
03 Mar 2021 — A flaw was found in grub2 in versions prior to 2.06. 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 Secure Boot mechanism. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. Se encontró un fallo en grub2 en versiones anterior... • https://bugzilla.redhat.com/show_bug.cgi?id=1886936 • CWE-787: Out-of-bounds Write •
CVSS: 7.5EPSS: 0%CPEs: 20EXPL: 0CVE-2020-27749 – grub2: Stack buffer overflow in grub_parser_split_cmdline()
https://notcve.org/view.php?id=CVE-2020-27749
03 Mar 2021 — 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 protections. The highest th... • https://bugzilla.redhat.com/show_bug.cgi?id=1899966 • CWE-121: Stack-based Buffer Overflow CWE-787: Out-of-bounds Write •
CVSS: 7.5EPSS: 0%CPEs: 20EXPL: 0CVE-2021-20225 – grub2: Heap out-of-bounds write in short form option parser
https://notcve.org/view.php?id=CVE-2021-20225
03 Mar 2021 — A flaw was found in grub2 in versions prior to 2.06. The option parser allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. Se encontró un fallo en grub2 en versiones anteriores a 2.06. El analizador de opciones permite a un atacante escribir más allá del final de un búfer asignado a la pila... • https://bugzilla.redhat.com/show_bug.cgi?id=1924696 • CWE-787: Out-of-bounds Write •
CVSS: 8.2EPSS: 0%CPEs: 20EXPL: 1CVE-2021-20233 – grub2: Heap out-of-bounds write due to miscalculation of space required for quoting
https://notcve.org/view.php?id=CVE-2021-20233
03 Mar 2021 — A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. Se encontró un fallo en grub2 en versiones anteriores a 2.06.... • https://github.com/pauljrowland/BootHoleFix • CWE-787: Out-of-bounds Write •
CVSS: 7.5EPSS: 0%CPEs: 20EXPL: 0CVE-2020-27779 – grub2: cutmem command allows privileged user to remove memory regions when Secure Boot is enabled
https://notcve.org/view.php?id=CVE-2020-27779
03 Mar 2021 — A flaw was found in grub2 in versions prior to 2.06. 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 vulnerability is to data confidentiality and integrity as well as system availability. Se encontró un fallo en grub2 en versiones anteriores a 2.06. El comando cutmem no respeta el bloqueo de s... • https://bugzilla.redhat.com/show_bug.cgi?id=1900698 • CWE-285: Improper Authorization •
CVSS: 7.8EPSS: 0%CPEs: 7EXPL: 0CVE-2020-35523 – libtiff: Integer overflow in tif_getimage.c
https://notcve.org/view.php?id=CVE-2020-35523
26 Feb 2021 — An integer overflow flaw was found in libtiff that exists in the tif_getimage.c file. This flaw allows an attacker to inject and execute arbitrary code when a user opens a crafted TIFF file. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Se encontró un fallo de desbordamiento de enteros en libtiff que existe en el archivo tif_getimage.c. Este fallo permite a un atacante inyectar y ejecutar código arbitrario cuando un usuario abre un archivo ... • https://bugzilla.redhat.com/show_bug.cgi?id=1932040 • CWE-190: Integer Overflow or Wraparound •
CVSS: 4.3EPSS: 0%CPEs: 5EXPL: 0CVE-2021-20229 – Gentoo Linux Security Advisory 202105-32
https://notcve.org/view.php?id=CVE-2021-20229
23 Feb 2021 — A flaw was found in PostgreSQL in versions before 13.2. This flaw allows a user with SELECT privilege on one column to craft a special query that returns all columns of the table. The highest threat from this vulnerability is to confidentiality. Se ha encontrado un fallo en PostgreSQL en las versiones anteriores a la 13.2. Este fallo permite a un usuario con privilegio SELECT en una columna elaborar una consulta especial que devuelva todas las columnas de la tabla. • https://bugzilla.redhat.com/show_bug.cgi?id=1925296 • CWE-863: Incorrect Authorization •
CVSS: 5.3EPSS: 0%CPEs: 6EXPL: 0CVE-2020-35518 – 389-ds-base: information disclosure during the binding of a DN
https://notcve.org/view.php?id=CVE-2020-35518
16 Feb 2021 — When binding against a DN during authentication, the reply from 389-ds-base will be different whether the DN exists or not. This can be used by an unauthenticated attacker to check the existence of an entry in the LDAP database. Cuando se vincula con un DN durante la autenticación, la respuesta de 389-ds-base será diferente si el DN se presenta o no. Esto puede ser usado por un atacante no autenticado para comprobar la existencia de una entrada en la base de datos de LDAP. Red Hat Directory Server is an LDA... • https://bugzilla.redhat.com/show_bug.cgi?id=1905565 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-203: Observable Discrepancy •