An issue was discovered in Linux Containers (LXC) before 2016-02-22. When executing a program via lxc-attach, the nonpriv session can escape to the parent session by using the TIOCSTI ioctl to push characters into the terminal’s input buffer, allowing an attacker to escape the container.
The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
Name | Vendor | Start Version | End Version |
---|---|---|---|
Lxc | Linuxcontainers | * | 2.0.0 |
Lxc | Ubuntu | precise | * |
Lxc | Ubuntu | trusty | * |
Lxc | Ubuntu | upstream | * |
Lxc | Ubuntu | vivid/stable-phone-overlay | * |
Access control involves the use of several protection mechanisms such as:
When any mechanism is not applied or otherwise fails, attackers can compromise the security of the software by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses: