CVSS: 8.5EPSS: 0%CPEs: 44EXPL: 0CVE-2020-25717 – samba: Active Directory (AD) domain user could become root on domain members
https://notcve.org/view.php?id=CVE-2020-25717
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: 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: 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: 8.8EPSS: 0%CPEs: 21EXPL: 0CVE-2020-10531 – ICU: Integer overflow in UnicodeString::doAppend()
https://notcve.org/view.php?id=CVE-2020-10531
An issue was discovered in International Components for Unicode (ICU) for C/C++ through 66.1. An integer overflow, leading to a heap-based buffer overflow, exists in the UnicodeString::doAppend() function in common/unistr.cpp. Se detectó un problema en International Components for Unicode (ICU) para C/C++ versiones hasta 66.1. Se presenta un desbordamiento de enteros, conllevando a un desbordamiento de búfer en la región heap de la memoria, en la función UnicodeString::doAppend() en el archivo common/unistr.cpp. • http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00004.html https://access.redhat.com/errata/RHSA-2020:0738 https://bugs.chromium.org/p/chromium/issues/detail?id=1044570 https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_24.html https://chromium.googlesource.com/chromium/deps/icu/+/9f4020916eb1f28f3666f018fdcbe6c9a37f0e08 https://github.com/unicode-org/icu/commit/b7d08bc04a4296982fcef8b6b8a354a9e4e7afca https://github.com/unicode-org/icu/pull/971 https://lists.debian • CWE-190: Integer Overflow or Wraparound CWE-787: Out-of-bounds Write •
CVSS: 8.8EPSS: 97%CPEs: 8EXPL: 6CVE-2020-6418 – Google Chromium V8 Type Confusion Vulnerability
https://notcve.org/view.php?id=CVE-2020-6418
Type confusion in V8 in Google Chrome prior to 80.0.3987.122 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. Una confusión de tipos en V8 en Google Chrome versiones anteriores a 80.0.3987.122, permitió a un atacante remoto explotar potencialmente una corrupción de la pila por medio de una página HTML diseñada. Google Chromium V8 Engine contains a type confusion vulnerability allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera. • https://www.exploit-db.com/exploits/48186 https://github.com/ChoKyuWon/CVE-2020-6418 https://github.com/Goyotan/CVE-2020-6418-PoC https://github.com/SivaPriyaRanganatha/CVE-2020-6418 http://packetstormsecurity.com/files/156632/Google-Chrome-80-JSCreate-Side-Effect-Type-Confusion.html https://access.redhat.com/errata/RHSA-2020:0738 https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_24.html https://crbug.com/1053604 https://lists.fedoraproject.org/archives/list/p • CWE-843: Access of Resource Using Incompatible Type ('Type Confusion') •