CVSS: 7.8EPSS: 0%CPEs: 2EXPL: 3CVE-2016-2854 – AUFS (Ubuntu 15.10) - 'allow_userns' Fuse/Xattr User Namespaces Privilege Escalation
https://notcve.org/view.php?id=CVE-2016-2854
The aufs module for the Linux kernel 3.x and 4.x does not properly maintain POSIX ACL xattr data, which allows local users to gain privileges by leveraging a group-writable setgid directory. El módulo aufs para el kernel de Linux 3.x y 4.x no mantiene correctamente datos POSIX ACL xattr, lo que permite a usuarios locales obtener privilegos aprovechando un directorio con permiso de escritura de grupo setgid. AUFS (Ubuntu 15.10) suffers from an allow_userns fuse/xattr user namespaces privilege escalation vulnerability. • https://www.exploit-db.com/exploits/41761 http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces http://www.openwall.com/lists/oss-security/2016/02/24/9 http://www.securityfocus.com/bid/96838 https://sourceforge.net/p/aufs/mailman/message/34864744 • CWE-269: Improper Privilege Management •
CVSS: 6.1EPSS: 0%CPEs: 1EXPL: 0CVE-2014-9717
https://notcve.org/view.php?id=CVE-2014-9717
fs/namespace.c in the Linux kernel before 4.0.2 processes MNT_DETACH umount2 system calls without verifying that the MNT_LOCKED flag is unset, which allows local users to bypass intended access restrictions and navigate to filesystem locations beneath a mount by calling umount2 within a user namespace. fs/namespace.c en el kernel de Linux en versiones anteriores a 4.0.2 procesa llamadas de sistema MNT_DETACH umount2 sin verificar que el indicador MNT_LOCKED no está establecido, lo que permite a usuarios locales eludir restricciones dedicadas al acceso y navegar a localizaciones de archivos de sistema bajo un montaje llamando a umount2 en un espacio de nombres de usuario. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce07d891a0891d3c0d0c2d73d577490486b809e1 http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.html http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00056.html http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.2 http://www.openwall.com/lists/oss-security/2015/04/17/4 http://www.securityfocus.com/bid/742 • CWE-284: Improper Access Control •
CVSS: 7.5EPSS: 0%CPEs: 7EXPL: 0CVE-2016-2117 – kernel: Kernel memory leakage to ethernet frames due to buffer overflow in ethernet drivers
https://notcve.org/view.php?id=CVE-2016-2117
The atl2_probe function in drivers/net/ethernet/atheros/atlx/atl2.c in the Linux kernel through 4.5.2 incorrectly enables scatter/gather I/O, which allows remote attackers to obtain sensitive information from kernel memory by reading packet data. La función atl2_probe en drivers/net/ethernet/atheros/atlx/atl2.c en el kernel de Linux hasta la versión 4.5.2 activa incorrectamente scatter/gather I/O, lo que permite a atacantes remotos obtener información sensible de la memoria del kernel leyendo datos de paquete. It was discovered that the atl2_probe() function in the Atheros L2 Ethernet driver in the Linux kernel incorrectly enabled scatter/gather I/O. A remote attacker could use this flaw to obtain potentially sensitive information from the kernel memory. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f43bfaeddc79effbf3d0fcb53ca477cca66f3db8 http://rhn.redhat.com/errata/RHSA-2016-2574.html http://rhn.redhat.com/errata/RHSA-2016-2584.html http://www.debian.org/security/2016/dsa-3607 http://www.openwall.com/lists/oss-security/2016/03/16/7 http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html http://www.secu • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 5.1EPSS: 0%CPEs: 10EXPL: 0CVE-2015-8839 – kernel: ext4 filesystem page fault race condition with fallocate call.
https://notcve.org/view.php?id=CVE-2015-8839
Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling. Múltiples condiciones de carrera en la implementación del sistema de archivos ext4 en el kernel de Linux en versiones anteriores a 4.5 permite a usuarios locales provocar una denegación de servicio (corrupción de disco) escribiendo a una página que está asociada con un archivo de usuario diferente después del manejo de hole punching desincronizado y de fallo de página. A flaw was found in the Linux kernel when attempting to "punch a hole" in files existing on an ext4 filesystem. When punching holes into a file races with the page fault of the same area, it is possible that freed blocks remain referenced from page cache pages mapped to process' address space. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b http://www.openwall.com/lists/oss-security/2016/04/01/4 http://www.securityfocus.com/bid/85798 http://www.securitytracker.com/id/1035455 http://www.ubuntu.com/usn/USN-3005-1 http://www.ubuntu.com/usn/USN-3006-1 http://www.ubuntu.com/usn/USN-3007-1 https://access.redhat.com/errata/RHSA-2017:1842 https://access.redhat.com/errata/RHSA-2017:2077 https:& • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 7.8EPSS: 0%CPEs: 2EXPL: 3CVE-2016-2853 – AUFS (Ubuntu 15.10) - 'allow_userns' Fuse/Xattr User Namespaces Privilege Escalation
https://notcve.org/view.php?id=CVE-2016-2853
The aufs module for the Linux kernel 3.x and 4.x does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an aufs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program. El módulo aufs para el kernel de Linux 3.x y 4.x no restringe correctamente el espacio de nombres de montaje, lo que permite a usuarios locales obtener privilegos montando un sistema de archivos aufs sobre un sistema de archivos FUSE y luego ejecutando un programa setuid manipulado. AUFS (Ubuntu 15.10) suffers from an allow_userns fuse/xattr user namespaces privilege escalation vulnerability. • https://www.exploit-db.com/exploits/41761 http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces http://www.openwall.com/lists/oss-security/2016/02/24/9 http://www.openwall.com/lists/oss-security/2021/10/18/1 http://www.securityfocus.com/bid/96839 https://sourceforge.net/p/aufs/mailman/message/34864744 • CWE-269: Improper Privilege Management •