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CVSS: 8.5EPSS: 0%CPEs: 44EXPL: 0

A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use this flaw to cause possible privilege escalation. Se encontró un fallo en la forma en que Samba mapea usuarios del dominio a usuarios locales. Un atacante autenticado podría usar este fallo para causar una posible escalada de privilegios • https://bugzilla.redhat.com/show_bug.cgi?id=2019672 https://security.gentoo.org/glsa/202309-06 https://www.samba.org/samba/security/CVE-2020-25717.html https://access.redhat.com/security/cve/CVE-2020-25717 • CWE-20: Improper Input Validation •

CVSS: 6.8EPSS: 0%CPEs: 43EXPL: 0

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: 1

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: 8.8EPSS: 0%CPEs: 3EXPL: 0

The version of docker as released for Red Hat Enterprise Linux 7 Extras via RHBA-2020:0053 advisory included an incorrect version of runc missing the fix for CVE-2019-5736, which was previously fixed via RHSA-2019:0304. This issue could allow a malicious or compromised container to compromise the container host and other containers running on the same host. This issue only affects docker version 1.13.1-108.git4ef4b30.el7, shipped in Red Hat Enterprise Linux 7 Extras. Both earlier and later versions are not affected. La versión de Docker según lo publicado para Red Hat Enterprise Linux 7 Extras por medio del aviso RHBA-2020:0053 incluía una versión incorrecta de runc que no tenía la corrección para CVE-2019-5736, que se corrigió previamente por medio de RHSA-2019:0304. • https://access.redhat.com/errata/RHBA-2020:0427 https://access.redhat.com/security/cve/CVE-2020-14298 https://access.redhat.com/security/vulnerabilities/runcescape https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-5736 https://bugzilla.redhat.com/show_bug.cgi?id=1848239 https://access.redhat.com/security/vulnerabilities/runc-regression-docker-1.13.1-108 • CWE-271: Privilege Dropping / Lowering Errors CWE-273: Improper Check for Dropped Privileges •

CVSS: 8.8EPSS: 0%CPEs: 2EXPL: 0

The docker packages version docker-1.13.1-108.git4ef4b30.el7 as released for Red Hat Enterprise Linux 7 Extras via RHBA-2020:0053 (https://access.redhat.com/errata/RHBA-2020:0053) included an incorrect version of runc that was missing multiple bug and security fixes. One of the fixes regressed in that update was the fix for CVE-2016-9962, that was previously corrected in the docker packages in Red Hat Enterprise Linux 7 Extras via RHSA-2017:0116 (https://access.redhat.com/errata/RHSA-2017:0116). The CVE-2020-14300 was assigned to this security regression and it is specific to the docker packages produced by Red Hat. The original issue - CVE-2016-9962 - could possibly allow a process inside container to compromise a process entering container namespace and execute arbitrary code outside of the container. This could lead to compromise of the container host or other containers running on the same container host. • https://access.redhat.com/errata/RHBA-2020:0427 https://access.redhat.com/security/cve/CVE-2016-9962 https://access.redhat.com/security/vulnerabilities/cve-2016-9962 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9962 https://access.redhat.com/security/cve/CVE-2020-14300 https://bugzilla.redhat.com/show_bug.cgi?id=1848829 https://access.redhat.com/security/vulnerabilities/runc-regression-docker-1.13.1-108 • CWE-271: Privilege Dropping / Lowering Errors CWE-273: Improper Check for Dropped Privileges •