Linux Nested User Namespace idmap Limit Local Privilege Escalation

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...

Linux Kernel 4.15.x 4.19.2 - map_write() CAP_SYS_ADMIN Local Privilege Escalation (ldpreload Method)

Linux Kernel 4.15.x 4.19.2 - mapwrite CAPSYSADMIN Local Privilege Escalation ldpreload Method !/bin/sh EDB Note: Download https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/47166.zip wrapper for Jann Horn's exploit for CVE-2018-18955 uses ld.so.preload technique --...

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...

CVE-2018-18955

creationtimestamp| type| source ---|---|--- 2018-11-16 00:00:00+00:00| exploited| https://www.exploit-db.com/exploits/45886 2018-11-20 07:03:47+00:00| published-proof-of-concept| https://t.me/antichat/2692 2018-11-27 22:33:29+00:00| seen|...

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...