CVSS: 5.5EPSS: 0%CPEs: 10EXPL: 1CVE-2018-7740 – kernel: Denial of service in resv_map_release function in mm/hugetlb.c
https://notcve.org/view.php?id=CVE-2018-7740
The resv_map_release function in mm/hugetlb.c in the Linux kernel through 4.15.7 allows local users to cause a denial of service (BUG) via a crafted application that makes mmap system calls and has a large pgoff argument to the remap_file_pages system call. La función resv_map_release en mm/hugetlb.c en el kernel de Linux hasta la versión 4.15.7 permite que usuarios locales provoquen una denegación de servicio (error) mediante una aplicación manipulada que realiza llamadas del sistema mmap y tiene un argumento grande pgoff en la llamada del sistema remap_file_pages. The resv_map_release function in mm/hugetlb.c in the Linux kernel, through 4.15.7, allows local users to cause a denial of service (BUG) via a crafted application that makes mmap system calls and has a large pgoff argument to the remap_file_pages system call. • http://www.securityfocus.com/bid/103316 https://access.redhat.com/errata/RHSA-2018:3083 https://access.redhat.com/errata/RHSA-2018:3096 https://bugzilla.kernel.org/show_bug.cgi?id=199037 https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html https://usn.ubuntu.com/3910-1 https://usn.ubuntu.com/3910-2 https://www.debian.org/security/2018/dsa-4187 https://www.debian.org/security/2018/dsa-4188 https://access.redhat.com/security/cve/CVE-2018-7740 htt • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 5.9EPSS: 0%CPEs: 1EXPL: 0CVE-2018-1065 – kernel: netfilter: xtables NULL pointer dereference in ip6_tables.c:ip6t_do_table() leading to a crash
https://notcve.org/view.php?id=CVE-2018-1065
The netfilter subsystem in the Linux kernel through 4.15.7 mishandles the case of a rule blob that contains a jump but lacks a user-defined chain, which allows local users to cause a denial of service (NULL pointer dereference) by leveraging the CAP_NET_RAW or CAP_NET_ADMIN capability, related to arpt_do_table in net/ipv4/netfilter/arp_tables.c, ipt_do_table in net/ipv4/netfilter/ip_tables.c, and ip6t_do_table in net/ipv6/netfilter/ip6_tables.c. El subsistema netfilter en el kernel de Linux, hasta la versión 4.15.7, gestiona de manera incorrecta el caso de una regla blob que contiene un salto pero carece de una cadena definida por el usuario. Esto permite que usuarios locales provoquen una denegación de servicio (DoS) aprovechando las capacidades CAP_NET_RAW o CAP_NET_ADMIN, relacionadas con arpt_do_table en net/ipv4/netfilter/arp_tables.c, ipt_do_table en net/ipv4/netfilter/ip_tables.c y ip6t_do_table en net/ipv6/netfilter/ip6_tables.c. A flaw was found in the netfilter/iptables subsystem. A user with the netfilter modification capabilities could insert a rule which could panic the system. • http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=57ebd808a97d7c5b1e1afb937c2db22beba3c1f8 http://lists.openwall.net/netdev/2018/01/27/46 http://patchwork.ozlabs.org/patch/870355 http://www.securitytracker.com/id/1040446 https://access.redhat.com/errata/RHSA-2018:2948 https://bugzilla.redhat.com/show_bug.cgi?id=1547824 https://github.com/torvalds/linux/commit/57ebd808a97d7c5b1e1afb937c2db22beba3c1f8 https://usn.ubuntu.com/3654-1 https://usn.ubuntu.com/3654-2 https: • CWE-476: NULL Pointer Dereference •
CVSS: 5.5EPSS: 0%CPEs: 12EXPL: 0CVE-2018-5803 – kernel: Missing length check of payload in net/sctp/sm_make_chunk.c:_sctp_make_chunk() function allows denial of service
https://notcve.org/view.php?id=CVE-2018-5803
In the Linux Kernel before version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102, an error in the "_sctp_make_chunk()" function (net/sctp/sm_make_chunk.c) when handling SCTP packets length can be exploited to cause a kernel crash. En el kernel de Linux en versiones anteriores a la 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51 y 3.2.102, un error en la función "_sctp_make_chunk()" (net/sctp/sm_make_chunk.c) al gestionar el tamaño de paquetes SCTP puede explotarse para provocar un cierre inesperado del kernel. An error in the "_sctp_make_chunk()" function (net/sctp/sm_make_chunk.c) when handling SCTP, packet length can be exploited by a malicious local user to cause a kernel crash and a DoS. • https://access.redhat.com/errata/RHSA-2018:1854 https://access.redhat.com/errata/RHSA-2018:2948 https://access.redhat.com/errata/RHSA-2018:3083 https://access.redhat.com/errata/RHSA-2018:3096 https://access.redhat.com/errata/RHSA-2019:0641 https://cdn.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.102 https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.1.51 https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.25 https://cdn.kernel.org/p • CWE-20: Improper Input Validation •
CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 2CVE-2018-7273 – Linux Kernel < 4.15.4 - 'show_floppy' KASLR Address Leak
https://notcve.org/view.php?id=CVE-2018-7273
In the Linux kernel through 4.15.4, the floppy driver reveals the addresses of kernel functions and global variables using printk calls within the function show_floppy in drivers/block/floppy.c. An attacker can read this information from dmesg and use the addresses to find the locations of kernel code and data and bypass kernel security protections such as KASLR. En el kernel de Linux hasta la versión 4.15.4, el controlador del disquete revela las direcciones de las funciones del kernel y las variables globales empleando llamadas printk en la función show_floppy en drivers/block/floppy.c. Un atacante puede leer esta información de dmesg y emplear las direcciones para encontrar las localizaciones del código y los datos del kernel y omitir las protecciones de seguridad como KASLR. • https://www.exploit-db.com/exploits/44325 https://github.com/jedai47/CVE-2018-7273 http://www.securityfocus.com/bid/103088 https://lkml.org/lkml/2018/2/20/669 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 7.4EPSS: 0%CPEs: 5EXPL: 0CVE-2018-1000028
https://notcve.org/view.php?id=CVE-2018-1000028
Linux kernel version after commit bdcf0a423ea1 - 4.15-rc4+, 4.14.8+, 4.9.76+, 4.4.111+ contains a Incorrect Access Control vulnerability in NFS server (nfsd) that can result in remote users reading or writing files they should not be able to via NFS. This attack appear to be exploitable via NFS server must export a filesystem with the "rootsquash" options enabled. This vulnerability appears to have been fixed in after commit 1995266727fa. El kernel de Linux, en versiones posteriores al commit con ID bdcf0a423ea1 - 4.15-rc4+, 4.14.8+, 4.9.76+, 4.4.111+, contiene una vulnerabilidad de control de acceso incorrecto en el servidor NFS (nfsd) que puede resultar en que usuarios remotos lean o escriban archivos para los que no deberían tener permisos mediante NFS. Este ataque parece ser explotable por un servidor NFS que debe exportar un sistema de archivos con las opciones "rootsquash" habilitadas. • https://git.kernel.org/linus/1995266727fa8143897e89b55f5d3c79aa828420 • CWE-269: Improper Privilege Management •