CVSS: 7.5EPSS: 2%CPEs: 54EXPL: 0CVE-2020-11868 – ntp: DoS on client ntpd using server mode packet
https://notcve.org/view.php?id=CVE-2020-11868
ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated synchronization via a server mode packet with a spoofed source IP address, because transmissions are rescheduled even when a packet lacks a valid origin timestamp. ntpd en ntp versiones anteriores a 4.2.8p14 y versiones 4.3.x anteriores a 4.3.100, permite a un atacante fuera de ruta bloquear una sincronización no autenticada por medio de un paquete en modo server con una dirección IP de origen falsificado, porque las transmisiones son reprogramados aun cuando un paquete carece de una marca de tiempo de origen valido. A flaw was found in the Network Time Protocol (NTP), where a security issue exists that allows an off-path attacker to prevent the Network Time Protocol daemon (ntpd) from synchronizing with NTP servers not using authentication. A server mode packet with a spoofed source address sent to the client ntpd causes the next transmission to be rescheduled, even if the packet does not have a valid origin timestamp. If the packet is sent to the client frequently enough, it stops polling the server and is unable to synchronize with it. • http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html http://support.ntp.org/bin/view/Main/NtpBug3592 https://bugzilla.redhat.com/show_bug.cgi?id=1716665 https://lists.debian.org/debian-lts-announce/2020/05/msg00004.html https://security.gentoo.org/glsa/202007-12 https://security.netapp.com/advisory/ntap-20200424-0002 https://www.oracle.com//security-alerts/cpujul2021.html https://access&# • CWE-346: Origin Validation Error CWE-400: Uncontrolled Resource Consumption •
CVSS: 7.2EPSS: 0%CPEs: 23EXPL: 0CVE-2019-20636 – kernel: out-of-bounds write via crafted keycode table
https://notcve.org/view.php?id=CVE-2019-20636
In the Linux kernel before 5.4.12, drivers/input/input.c has out-of-bounds writes via a crafted keycode table, as demonstrated by input_set_keycode, aka CID-cb222aed03d7. En el kernel de Linux versiones anteriores a 5.4.12, el archivo drivers/input/input.c presenta escrituras fuera de límites por medio de una tabla de códigos clave diseñada, como es demostrado en la función input_set_keycode, también se conoce como CID-cb222aed03d7. An out-of-bounds write flaw was found in the Linux kernel. A crafted keycode table could be used by drivers/input/input.c to perform the out-of-bounds write. A local user with root access can insert garbage to this keycode table that can lead to out-of-bounds memory access. • https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.12 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cb222aed03d798fc074be55e59d9a112338ee784 https://github.com/torvalds/linux/commit/cb222aed03d798fc074be55e59d9a112338ee784 https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html https://security.netapp.com/advisory/ntap-20200430-0004 https://access.redhat.com/security/cve/CVE-2019-20 • CWE-787: Out-of-bounds Write •
CVSS: 8.8EPSS: 0%CPEs: 52EXPL: 6CVE-2020-8835 – Linux kernel bpf verifier vulnerability
https://notcve.org/view.php?id=CVE-2020-8835
In the Linux kernel 5.5.0 and newer, the bpf verifier (kernel/bpf/verifier.c) did not properly restrict the register bounds for 32-bit operations, leading to out-of-bounds reads and writes in kernel memory. The vulnerability also affects the Linux 5.4 stable series, starting with v5.4.7, as the introducing commit was backported to that branch. This vulnerability was fixed in 5.6.1, 5.5.14, and 5.4.29. (issue is aka ZDI-CAN-10780) En el kernel de Linux versiones 5.5.0 y más recientes, el verificador bpf (kernel/bpf/verifier.c) no restringió apropiadamente los límites de registro para operaciones de 32 bits, conllevando a lecturas y escrituras fuera de límites en la memoria del kernel. La vulnerabilidad también afecta a la serie estable de Linux versión 5.4, comenzando con la versión v5.4.7, ya que el commit de introducción fue respaldado en esa derivación. • https://github.com/zilong3033/CVE-2020-8835 https://github.com/digamma-ai/CVE-2020-8835-verification https://github.com/SplendidSky/CVE-2020-8835 https://github.com/Prabhashaka/Exploitation-CVE-2020-8835 https://github.com/johnatag/INF8602-CVE-2020-8835 http://www.openwall.com/lists/oss-security/2021/07/20/1 https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=f2d67fec0b43edce8c416101cdc52e71145b5fef https://git.kernel.org/pub/scm/linux/kernel/git/torvald • CWE-125: Out-of-bounds Read CWE-787: Out-of-bounds Write •
CVSS: 5.5EPSS: 0%CPEs: 63EXPL: 0CVE-2020-8832 – Ubuntu 18.04 Linux kernel i915 incomplete fix for CVE-2019-14615
https://notcve.org/view.php?id=CVE-2020-8832
The fix for the Linux kernel in Ubuntu 18.04 LTS for CVE-2019-14615 ("The Linux kernel did not properly clear data structures on context switches for certain Intel graphics processors.") was discovered to be incomplete, meaning that in versions of the kernel before 4.15.0-91.92, an attacker could use this vulnerability to expose sensitive information. Se detectó que la solución para el kernel de Linux en Ubuntu versión 18.04 LTS para CVE-2019-14615 ("El kernel de Linux no borró apropiadamente las estructuras de datos en los conmutadores de contexto para determinados procesadores gráficos de Intel") estaba incompleta, lo que significa que en las versiones de kernel anteriores a 4.15.0-91.92, un atacante podría usar esta vulnerabilidad para exponer información confidencial. • https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1862840 https://security.netapp.com/advisory/ntap-20200430-0004 https://usn.ubuntu.com/usn/usn-4302-1 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 7.8EPSS: 0%CPEs: 6EXPL: 0CVE-2019-17274
https://notcve.org/view.php?id=CVE-2019-17274
NetApp FAS 8300/8700 and AFF A400 Baseboard Management Controller (BMC) firmware versions 13.x prior to 13.1P1 were shipped with a default account enabled that could allow unauthorized arbitrary command execution via local access. NetApp FAS 8300/8700 y AFF A400 Baseboard Management Controller (BMC) versiones de firmware 13.x anteriores a 13.1P1, fueron enviadas con una cuenta predeterminada habilitada que podría permitir una ejecución de comandos arbitrarios no autorizada por medio de un acceso local. • https://security.netapp.com/advisory/ntap-20200226-0001 • CWE-1188: Initialization of a Resource with an Insecure Default •