lxc-attach in LXC before 1.0.9 and 2.x before 2.0.6 allows an attacker inside of an unprivileged container to use an inherited file descriptor, of the hosts /proc, to access the rest of the hosts filesystem via the openat() family of syscalls.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Lxc | Linuxcontainers | * | 1.0.9 (excluding) |
| Lxc | Linuxcontainers | 2.0.0 (including) | 2.0.6 (excluding) |
| Lxc | Ubuntu | devel | * |
| Lxc | Ubuntu | esm-infra-legacy/trusty | * |
| Lxc | Ubuntu | esm-infra/xenial | * |
| Lxc | Ubuntu | precise | * |
| Lxc | Ubuntu | trusty | * |
| Lxc | Ubuntu | trusty/esm | * |
| Lxc | Ubuntu | upstream | * |
| Lxc | Ubuntu | vivid/stable-phone-overlay | * |
| Lxc | Ubuntu | xenial | * |
| Lxc | Ubuntu | yakkety | * |
| Lxc | Ubuntu | zesty | * |
References
- http://www.securityfocus.com/bid/94498
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=845465
- https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1639345
- https://bugzilla.redhat.com/show_bug.cgi?id=1398242
- https://github.com/lxc/lxc/commit/81f466d05f2a89cb4f122ef7f593ff3f279b165c
- https://security-tracker.debian.org/tracker/CVE-2016-8649
- http://www.securityfocus.com/bid/94498
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=845465
- https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1639345
- https://bugzilla.redhat.com/show_bug.cgi?id=1398242
- https://github.com/lxc/lxc/commit/81f466d05f2a89cb4f122ef7f593ff3f279b165c
- https://security-tracker.debian.org/tracker/CVE-2016-8649