CVE-2018-16884

A flaw was found in the Linux kernel's NFS41+ subsystem. NFS41+ shares mounted in different network namespaces at the same time can make bcsvcprocess use wrong back-channel IDs and cause a use-after-free vulnerability. Thus a malicious container user can cause a host kernel memory corruption and ...

kernel: NULL pointer dereference in af_netlink.c:__netlink_ns_capable() allows for denial of service

The Linux kernel was found to be vulnerable to a NULL pointer dereference bug in the netlinknscapable function in the net/netlink/afnetlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service...

Kubernetes - (Authenticated) Arbitrary Requests

!/usr/bin/env python3 import argparse from ssl import wrapsocket from socket import createconnection from secrets import base64, tokenbytes def requeststage1namespace, pod, method, target, token: stage1 = "" with open'stage1', 'r' as stage1fd: stage1 = stage1fd.read return stage1.formatnamespace,...

Kernel security update: Virtuozzo ReadyKernel patch 67.0 for Virtuozzo 7.0.8 and 7.0.8 HF1

The cumulative Virtuozzo ReadyKernel patch was updated with security and stability fixes. The patch applies to Virtuozzo kernels 3.10.0-862.9.1.vz7.63.3 7.0.8 and 3.10.0-862.11.6.vz7.64.7 7.0.8 HF1. Vulnerability id: CVE-2018-14646 The Linux kernel was found to be vulnerable to a NULL pointer...

Linux - Nested User Namespace idmap Limit Local Privilege Escalation (Metasploit)

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'Linux Nested User Namespace idmap Limit Local Privilege Escalation', 'Description' = %q This module exploits a vulnerability in Linux kernels...

Linux Nested User Namespace idmap Limit Local Privilege Escalation Exploit

This Metasploit module exploits a vulnerability in Linux kernels 4.15.0 to 4.18.18, and 4.19.0 to 4.19.1, where broken uid/gid mappings between nested user namespaces and kernel uid/gid mappings allow elevation to root CVE-2018-18955. The target system must have unprivileged user namespaces enabl...

kernel: NULL pointer dereference in af_netlink.c:__netlink_ns_capable() allows for denial of service

The Linux kernel was found to be vulnerable to a NULL pointer dereference bug in the netlinknscapable function in the net/netlink/afnetlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service...

CVE-2018-14646

The Linux kernel before 4.15-rc8 was found to be vulnerable to a NULL pointer dereference bug in the netlinknscapable function in the net/netlink/afnetlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service...

CVE-2018-14646

The Linux kernel before 4.15-rc8 was found to be vulnerable to a NULL pointer dereference bug in the netlinknscapable function in the net/netlink/afnetlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service...

CVE-2018-14646

The Linux kernel before 4.15-rc8 was found to be vulnerable to a NULL pointer dereference bug in the netlinknscapable function in the net/netlink/afnetlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service...

Null pointer dereference

The Linux kernel before 4.15-rc8 was found to be vulnerable to a NULL pointer dereference bug in the netlinknscapable function in the net/netlink/afnetlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service...

UBUNTU-CVE-2018-14646

The Linux kernel before 4.15-rc8 was found to be vulnerable to a NULL pointer dereference bug in the netlinknscapable function in the net/netlink/afnetlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service...

CVE-2018-14646

The Linux kernel before 4.15-rc8 was found to be vulnerable to a NULL pointer dereference bug in the netlinknscapable function in the net/netlink/afnetlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service...

CVE-2018-14646

The Linux kernel before 4.15-rc8 was found to be vulnerable to a NULL pointer dereference bug in the netlinknscapable function in the net/netlink/afnetlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service...

Linux Nested User Namespace idmap Limit Local Privilege Escalation

This module exploits a vulnerability in Linux kernels 4.15.0 to 4.18.18, and 4.19.0 to 4.19.1, where broken uid/gid mappings between nested user namespaces and kernel uid/gid mappings allow elevation to root CVE-2018-18955. The target system must have unprivileged user namespaces enabled and the...

CVE-2018-18955

In the Linux kernel 4.15.x through 4.19.x before 4.19.2, mapwrite in kernel/usernamespace.c allows privilege escalation because it mishandles nested user namespaces with more than 5 UID or GID ranges. A user who has CAPSYSADMIN in an affected user namespace can bypass access controls on resources...

CVE-2018-18955

CVE-2018-18955 affects Linux kernels 4.15.x–4.19.x, with privilege escalation via map_write() in kernel/user_namespace.c when nested user namespaces have more than 5 UID/GID ranges. A user with CAP_SYS_ADMIN in the affected namespace can bypass controls outside the namespace (e.g., read /etc/shad...

EUVD-2018-10659

In the Linux kernel 4.15.x through 4.19.x before 4.19.2, mapwrite in kernel/usernamespace.c allows privilege escalation because it mishandles nested user namespaces with more than 5 UID or GID ranges. A user who has CAPSYSADMIN in an affected user namespace can bypass access controls on resources...

Linux - Broken uidgid Mapping for Nested User Namespaces

Linux - Broken uidgid Mapping for Nested User Namespaces commit 6397fac4915a "userns: bump idmap limits to 340" increases the number of possible uid/gid mappings that a namespace can have from 5 to 340. This is implemented by switching to a different data structure if the number of mappings excee...

CVE-2018-18955

In the Linux kernel 4.15.x through 4.19.x before 4.19.2, mapwrite in kernel/usernamespace.c allows privilege escalation because it mishandles nested user namespaces with more than 5 UID or GID ranges. A user who has CAPSYSADMIN in an affected user namespace can bypass access controls on resources...