CVSS: 5.3EPSS: 2%CPEs: 23EXPL: 2CVE-2020-27223 – jetty: request containing multiple Accept headers with a large number of "quality" parameters may lead to DoS
https://notcve.org/view.php?id=CVE-2020-27223
In Eclipse Jetty 9.4.6.v20170531 to 9.4.36.v20210114 (inclusive), 10.0.0, and 11.0.0 when Jetty handles a request containing multiple Accept headers with a large number of “quality” (i.e. q) parameters, the server may enter a denial of service (DoS) state due to high CPU usage processing those quality values, resulting in minutes of CPU time exhausted processing those quality values. En Eclipse Jetty versiones 9.4.6.v20170531 hasta 9.4.36.v20210114 (inclusive), versiones 10.0.0 y 11.0.0, cuando Jetty maneja una petición que contiene múltiples encabezados Accept con una gran cantidad de parámetros “quality” (es decir, q), el servidor puede entrar en un estado de denegación de servicio (DoS) debido al alto uso de CPU procesando esos valores de calidad, resultando en minutos de tiempo de CPU agotados procesando esos valores de calidad • https://github.com/motikan2010/CVE-2020-27223 https://github.com/ttestoo/Jetty-CVE-2020-27223 https://bugs.eclipse.org/bugs/show_bug.cgi?id=571128 https://github.com/eclipse/jetty.project/security/advisories/GHSA-m394-8rww-3jr7 https://lists.apache.org/thread.html/r068dfd35ce2193f6af28b74ff29ab148c2b2cacb235995576f5bea78%40%3Cissues.solr.apache.org%3E https://lists.apache.org/thread.html/r07aedcb1ece62969c406cb84c8f0e22cec7e42cdc272f3176e473320%40%3Cusers.solr.apache.org%3E https://lists.apache.org/thread.html/r0b639bd9bfaea2650221 • CWE-400: Uncontrolled Resource Consumption CWE-407: Inefficient Algorithmic Complexity •
CVSS: 5.5EPSS: 0%CPEs: 10EXPL: 0CVE-2021-26932
https://notcve.org/view.php?id=CVE-2021-26932
An issue was discovered in the Linux kernel 3.2 through 5.10.16, as used by Xen. Grant mapping operations often occur in batch hypercalls, where a number of operations are done in a single hypercall, the success or failure of each one is reported to the backend driver, and the backend driver then loops over the results, performing follow-up actions based on the success or failure of each operation. Unfortunately, when running in PV mode, the Linux backend drivers mishandle this: Some errors are ignored, effectively implying their success from the success of related batch elements. In other cases, errors resulting from one batch element lead to further batch elements not being inspected, and hence successful ones to not be possible to properly unmap upon error recovery. Only systems with Linux backends running in PV mode are vulnerable. • http://xenbits.xen.org/xsa/advisory-361.html https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ebee0eab08594b2bd5db716288a4f1ae5936e9bc https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2XQR52ICKRK3GC4HDWLMWF2U55YGAR63 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GWQWPWYZRX •
CVSS: 7.8EPSS: 0%CPEs: 12EXPL: 1CVE-2021-26708 – kernel: race conditions caused by wrong locking in net/vmw_vsock/af_vsock.c
https://notcve.org/view.php?id=CVE-2021-26708
A local privilege escalation was discovered in the Linux kernel before 5.10.13. Multiple race conditions in the AF_VSOCK implementation are caused by wrong locking in net/vmw_vsock/af_vsock.c. The race conditions were implicitly introduced in the commits that added VSOCK multi-transport support. Se detectó una escalada de privilegios local en el kernel de Linux versiones anteriores a 5.10.13. Múltiples condiciones de carrera en la implementación de AF_VSOCK son causadas mediante un bloqueo incorrecto en el archivo net/vmw_vsock / af_vsock.c. • https://github.com/azpema/CVE-2021-26708 http://www.openwall.com/lists/oss-security/2021/02/05/6 http://www.openwall.com/lists/oss-security/2021/04/09/2 http://www.openwall.com/lists/oss-security/2022/01/25/14 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.13 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c518adafa39f37858697ac9309c6cf1805581446 https://security.netapp.com/advisory/ntap-20210312-0008 https://www.openwall • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-667: Improper Locking •
CVSS: 7.8EPSS: 0%CPEs: 26EXPL: 2CVE-2020-25669
https://notcve.org/view.php?id=CVE-2020-25669
A vulnerability was found in the Linux Kernel where the function sunkbd_reinit having been scheduled by sunkbd_interrupt before sunkbd being freed. Though the dangling pointer is set to NULL in sunkbd_disconnect, there is still an alias in sunkbd_reinit causing Use After Free. Se encontró una vulnerabilidad en el Kernel de Linux donde la función sunkbd_reinit habiendo sido programada por la función sunkbd_interrupt antes de que sunkbd fuera liberada. Aunque el puntero colgante está establecido en NULL en la función sunkbd_disconnect, todavía se presenta un alias en sunkbd_reinit causando un Uso de la Memoria Previamente Liberada • http://www.openwall.com/lists/oss-security/2020/11/05/2 http://www.openwall.com/lists/oss-security/2020/11/20/5 https://github.com/torvalds/linux/commit/77e70d351db7de07a46ac49b87a6c3c7a60fca7e https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html https://security.netapp.com/advisory/ntap-20210702-0006 https://www.openwall.com/lists/oss-security/2020/11/05/2%2C https://www.openwall.com/lists/oss- • CWE-416: Use After Free •
CVSS: 7.8EPSS: 96%CPEs: 39EXPL: 56CVE-2021-3156 – Sudo Heap-Based Buffer Overflow Vulnerability
https://notcve.org/view.php?id=CVE-2021-3156
Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character. Sudo versiones anteriores a 1.9.5p2 contiene un error de desbordamiento que puede resultar en un desbordamiento de búfer basado en la pila, lo que permite la escalada de privilegios a root a través de "sudoedit -s" y un argumento de línea de comandos que termina con un solo carácter de barra invertida A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. • https://www.exploit-db.com/exploits/49521 https://www.exploit-db.com/exploits/49522 https://github.com/blasty/CVE-2021-3156 https://github.com/worawit/CVE-2021-3156 https://github.com/stong/CVE-2021-3156 https://github.com/reverse-ex/CVE-2021-3156 https://github.com/CptGibbon/CVE-2021-3156 https://github.com/Rvn0xsy/CVE-2021-3156-plus https://github.com/mr-r3b00t/CVE-2021-3156 https://github.com/0xdevil/CVE-2021-3156 https://github.com/unauth401/CVE-20 • CWE-122: Heap-based Buffer Overflow CWE-193: Off-by-one Error •