16 Nov 2018
CVE-2018-18955 - CVE Vulnerability
In the Linux kernel 4.15.x through 4.19.x before 4.19.2, map_write() in kernel/user_namespace.c allows privilege escalation because it mishandles nested user namespaces with more than 5 UID or GID ranges. A user who has CAP_SYS_ADMIN in an affected user namespace can bypass access controls on resources outside the namespace, as demonstrated by reading /etc/shadow. This occurs because an ID transformation takes place properly for the namespaced-to-kernel direction but not for the kernel-to-namespaced direction. (CVSS:0.0) (Last Update:2018-11-16)
Vulnerability Details : In the Linux kernel 4.15.x through 4.19.x before 4.19.2, map_write() in kernel/user_namespace.c allows privilege escalation because it mishandles nested user namespaces with more than 5 UID or GID ranges. A user who has CAP_SYS_ADMIN in an affected user namespace can bypass access controls on resources outside the namespace, as demonstrated by reading /etc/shadow. This occurs because an ID transformation takes place properly for the namespaced-to-kernel direction but not for the kernel-to-namespaced direction. Publish Date : 2018-11-16 Last Update Date : 2018-11-16 - CVSS Scores & Vulnerability Types
- Products Affected By CVE-2018-18955
- References For CVE-2018-18955 | |||||||||||||||||||||||||||||||||||||||||||||
- Metasploit Modules Related To CVE-2018-18955There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information) |