CVSS: 5.7EPSS: 0%CPEs: 11EXPL: 0CVE-2020-27825
https://notcve.org/view.php?id=CVE-2020-27825
A use-after-free flaw was found in kernel/trace/ring_buffer.c in Linux kernel (before 5.10-rc1). There was a race problem in trace_open and resize of cpu buffer running parallely on different cpus, may cause a denial of service problem (DOS). This flaw could even allow a local attacker with special user privilege to a kernel information leak threat. Se encontró un fallo de uso de la memoria previamente liberada en el archivo kernel/trace/ring_buffer.c en el kernel de Linux (anteriores a la versión 5.10-rc1). Se presentó un problema de carrera en trace_open y el cambio de tamaño del búfer de la CPU ejecutándose paralelamente en diferentes CPUs, puede causar un problema de Denegación de Servicio (DOS). • https://bugzilla.redhat.com/show_bug.cgi?id=1905155 https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html https://security.netapp.com/advisory/ntap-20210521-0008 https://www.debian.org/security/2021/dsa-4843 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 7.8EPSS: 0%CPEs: 14EXPL: 3CVE-2020-27786 – kernel: use-after-free in kernel midi subsystem
https://notcve.org/view.php?id=CVE-2020-27786
A flaw was found in the Linux kernel’s implementation of MIDI, where an attacker with a local account and the permissions to issue ioctl commands to midi devices could trigger a use-after-free issue. A write to this specific memory while freed and before use causes the flow of execution to change and possibly allow for memory corruption or privilege escalation. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. Se encontró un fallo en la implementación de MIDI en el kernel de Linux, donde un atacante con una cuenta local y los permisos para emitir comandos ioctl a dispositivos midi podría desencadenar un problema de uso después de la liberación. Una escritura en esta memoria específica mientras está liberada y antes de su uso hace que el flujo de ejecución cambie y posiblemente permita la corrupción de memoria o la escalada de privilegios. • https://github.com/kiks7/CVE-2020-27786-Kernel-Exploit https://github.com/elbiazo/CVE-2020-27786 https://github.com/ii4gsp/CVE-2020-27786 http://www.openwall.com/lists/oss-security/2020/12/03/1 https://bugzilla.redhat.com/show_bug.cgi?id=1900933 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c1f6e3c818dd734c30f6a7eeebf232ba2cf3181d https://security.netapp.com/advisory/ntap-20210122-0002 https://access.redhat.com/security/cve/CVE-2020-27786 • CWE-416: Use After Free •
CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 0CVE-2020-29573 – glibc: stack-based buffer overflow if the input to any of the printf family of functions is an 80-bit long double with a non-canonical bit pattern
https://notcve.org/view.php?id=CVE-2020-29573
sysdeps/i386/ldbl2mpn.c in the GNU C Library (aka glibc or libc6) before 2.23 on x86 targets has a stack-based buffer overflow if the input to any of the printf family of functions is an 80-bit long double with a non-canonical bit pattern, as seen when passing a \x00\x04\x00\x00\x00\x00\x00\x00\x00\x04 value to sprintf. NOTE: the issue does not affect glibc by default in 2016 or later (i.e., 2.23 or later) because of commits made in 2015 for inlining of C99 math functions through use of GCC built-ins. In other words, the reference to 2.23 is intentional despite the mention of "Fixed for glibc 2.33" in the 26649 reference. El archivo sysdeps/i386/ldbl2mpn.c en la GNU C Library (también se conoce como glibc o libc6) versiones anteriores a 2.23 en objetivos x86 presenta un desbordamiento de búfer en la región stack de la memoria si la entrada a cualquiera de la familia funciones printf es un doble longitud de 80 bits con un patrón de bits no canónico, como se ve al pasar un valor \x00\x04\x00\x00\x00\x00\x00\x00\x00\x04 a sprintf. NOTA: la cuestión no afecta a la glibc por defecto en 2016 o más tarde (es decir, 2,23 o más tarde), debido a los compromisos contraídos en 2015 para alinear las funciones matemáticas del C99 mediante el uso de los elementos incorporados del GCC. • https://security.gentoo.org/glsa/202101-20 https://security.netapp.com/advisory/ntap-20210122-0004 https://sourceware.org/bugzilla/show_bug.cgi?id=26649 https://sourceware.org/pipermail/libc-alpha/2020-September/117779.html https://access.redhat.com/security/cve/CVE-2020-29573 https://bugzilla.redhat.com/show_bug.cgi?id=1905213 • CWE-121: Stack-based Buffer Overflow CWE-787: Out-of-bounds Write •
CVSS: 4.3EPSS: 0%CPEs: 6EXPL: 1CVE-2020-27773
https://notcve.org/view.php?id=CVE-2020-27773
A flaw was found in ImageMagick in MagickCore/gem-private.h. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of values outside the range of type `unsigned char` or division by zero. This would most likely lead to an impact to application availability, but could potentially cause other problems related to undefined behavior. This flaw affects ImageMagick versions prior to 7.0.9-0. Se encontró un fallo en ImageMagick en el archivo MagickCore/gem-private.h. • https://bugzilla.redhat.com/show_bug.cgi?id=1898295 https://lists.debian.org/debian-lts-announce/2021/01/msg00010.html https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html • CWE-369: Divide By Zero •
CVSS: 4.3EPSS: 0%CPEs: 6EXPL: 1CVE-2020-27775
https://notcve.org/view.php?id=CVE-2020-27775
A flaw was found in ImageMagick in MagickCore/quantum.h. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of values outside the range of type unsigned char. This would most likely lead to an impact to application availability, but could potentially cause other problems related to undefined behavior. This flaw affects ImageMagick versions prior to 7.0.9-0. Se encontró un fallo en ImageMagick en el archivo MagickCore/quantum.h. • https://bugzilla.redhat.com/show_bug.cgi?id=1898300 https://lists.debian.org/debian-lts-announce/2021/03/msg00030.html https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html • CWE-190: Integer Overflow or Wraparound •