CVSS: 9.0EPSS: 0%CPEs: 33EXPL: 0CVE-2020-25719 – samba: Samba AD DC did not always rely on the SID and PAC in Kerberos tickets
https://notcve.org/view.php?id=CVE-2020-25719
A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise. Se encontró un fallo en la forma en que Samba, como controlador de dominio de Active Directory, implementaba la autenticación basada en nombres de Kerberos. El AD DC de Samba, podía confundirse sobre el usuario que representa un ticket si no requería estrictamente un PAC de Kerberos y siempre usaba los SIDs encontrados dentro. • https://bugzilla.redhat.com/show_bug.cgi?id=2019732 https://security.gentoo.org/glsa/202309-06 https://www.samba.org/samba/security/CVE-2020-25719.html https://access.redhat.com/security/cve/CVE-2020-25719 • CWE-287: Improper Authentication CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 6.8EPSS: 0%CPEs: 43EXPL: 0CVE-2016-2124 – samba: SMB1 client connections can be downgraded to plaintext authentication
https://notcve.org/view.php?id=CVE-2016-2124
A flaw was found in the way samba implemented SMB1 authentication. An attacker could use this flaw to retrieve the plaintext password sent over the wire even if Kerberos authentication was required. Se ha encontrado un fallo en la forma en que Samba implementa la autenticación SMB1. Un atacante podría usar este fallo para recuperar la contraseña en texto plano enviada a través del cable, incluso si es requerida la autenticación Kerberos • https://bugzilla.redhat.com/show_bug.cgi?id=2019660 https://lists.debian.org/debian-lts-announce/2023/09/msg00013.html https://security.gentoo.org/glsa/202309-06 https://www.samba.org/samba/security/CVE-2016-2124.html https://access.redhat.com/security/cve/CVE-2016-2124 • CWE-287: Improper Authentication •
CVSS: 8.8EPSS: 0%CPEs: 76EXPL: 1CVE-2021-3656 – kernel: SVM nested virtualization issue in KVM (VMLOAD/VMSAVE)
https://notcve.org/view.php?id=CVE-2021-3656
A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the "virt_ext" field, this issue could allow a malicious L1 to disable both VMLOAD/VMSAVE intercepts and VLS (Virtual VMLOAD/VMSAVE) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape. Se ha encontrado un fallo en el código AMD de KVM para soportar la virtualización anidada SVM. • https://github.com/rami08448/CVE-2021-3656-Demo https://bugzilla.redhat.com/show_bug.cgi?id=1983988 https://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?id=c7dfa4009965a9b2d7b329ee970eb8da0d32f0bc https://github.com/torvalds/linux/commit/c7dfa4009965a9b2d7b329ee970eb8da0d32f0bc https://www.openwall.com/lists/oss-security/2021/08/16/1 https://access.redhat.com/security/cve/CVE-2021-3656 • CWE-862: Missing Authorization •
CVSS: 6.8EPSS: 0%CPEs: 35EXPL: 1CVE-2021-3672 – c-ares: Missing input validation of host names may lead to domain hijacking
https://notcve.org/view.php?id=CVE-2021-3672
A flaw was found in c-ares library, where a missing input validation check of host names returned by DNS (Domain Name Servers) can lead to output of wrong hostnames which might potentially lead to Domain Hijacking. The highest threat from this vulnerability is to confidentiality and integrity as well as system availability. Se ha encontrado un fallo en la biblioteca c-ares, en la que una falta de comprobación de la comprobación de entrada de los nombres de host devueltos por los DNS (Servidores de Nombres de Dominio) puede conllevar a una salida de nombres de host erróneos, que podría conllevar potencialmente a un Secuestro de Dominios. La mayor amenaza de esta vulnerabilidad es para la confidencialidad e integridad, así como para la disponibilidad del sistema • https://bugzilla.redhat.com/show_bug.cgi?id=1988342 https://c-ares.haxx.se/adv_20210810.html https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://security.gentoo.org/glsa/202401-02 https://www.oracle.com/security-alerts/cpujul2022.html https://access.redhat.com/security/cve/CVE-2021-3672 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •
CVSS: 7.0EPSS: 0%CPEs: 68EXPL: 1CVE-2021-3609 – kernel: race condition in net/can/bcm.c leads to local privilege escalation
https://notcve.org/view.php?id=CVE-2021-3609
.A flaw was found in the CAN BCM networking protocol in the Linux kernel, where a local attacker can abuse a flaw in the CAN subsystem to corrupt memory, crash the system or escalate privileges. This race condition in net/can/bcm.c in the Linux kernel allows for local privilege escalation to root. Se ha encontrado un fallo en el protocolo de red CAN BCM en el kernel de Linux, donde un atacante local puede abusar de un fallo en el subsistema CAN para corromper la memoria, bloquear el sistema o escalar privilegios. Esta condición de carrera en el archivo net/can/bcm.c en el kernel de Linux permite una escalada de privilegios local a root A flaw was found in the CAN BCM networking protocol in the Linux kernel, where a local attacker can abuse a flaw in the CAN subsystem to corrupt memory, crash the system or escalate privileges. • https://bugzilla.redhat.com/show_bug.cgi?id=1971651 https://github.com/nrb547/kernel-exploitation/blob/main/cve-2021-3609/cve-2021-3609.md https://github.com/torvalds/linux/commit/d5f9023fa61ee8b94f37a93f08e94b136cf1e463 https://security.netapp.com/advisory/ntap-20220419-0004 https://www.openwall.com/lists/oss-security/2021/06/19/1 https://access.redhat.com/security/cve/CVE-2021-3609 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •