Bug 556310 – <app-emulation/lxc-1.0.8: Multiple vulnerabilities

• Status: RESOLVED FIXED
• Product: Gentoo Security

[Description Agostino Sarubbo 2015-07-30 10:27:03 UTC]

From ${URL} :

Two security issues were found in LXC:

* Roman Fiedler discovered a directory traversal flaw that allows
  arbitrary file creation as the root user. A local attacker must set up
  a symlink at /run/lock/lxc/var/lib/lxc/<CONTAINER>, prior to an admin
  ever creating an LXC container on the system. If an admin then creates
  a container with a name matching <CONTAINER>, the symlink will be
  followed and LXC will create an empty file at the symlink's target as
  the root user. 
  - CVE-2015-1331
  - Affects LXC 1.0.0 and higher
  - https://launchpad.net/bugs/1470842
  - https://github.com/lxc/lxc/commit/72cf81f6a3404e35028567db2c99a90406e9c6e6 (master)
  - https://github.com/lxc/lxc/commit/61ecf69d7834921cc078e14d1b36c459ad8f91c7 (stable-1.1)
  - https://github.com/lxc/lxc/commit/f547349ea7ef3a6eae6965a95cb5986cd921bd99 (stable-1.0)

* Roman Fiedler discovered a flaw that allows processes intended to be
  run inside of confined LXC containers to escape their AppArmor or
  SELinux confinement. A malicious container can create a fake proc
  filesystem, possibly by mounting tmpfs on top of the container's
  /proc, and wait for a lxc-attach to be ran from the host environment.
  lxc-attach incorrectly trusts the container's
  /proc/PID/attr/{current,exec} files to set up the AppArmor profile and
  SELinux domain transitions which may result in no confinement being
  used.
  - CVE-2015-1334
  - Affects LXC 0.9.0 and higher
  - https://launchpad.net/bugs/1475050
  - https://github.com/lxc/lxc/commit/5c3fcae78b63ac9dd56e36075903921bd9461f9e (master)
  - https://github.com/lxc/lxc/commit/659e807c8dd1525a5c94bdecc47599079fad8407 (stable-1.1)
  - https://github.com/lxc/lxc/commit/15ec0fd9d490dd5c8a153401360233c6ee947c24 (stable-1.0)



@maintainer(s): after the bump, in case we need to stabilize the package, please let us know if it is ready for the stabilization or not.

[Comment 1 Thomas Deutschmann (RETIRED) 2016-11-22 16:29:34 UTC]

Fix for 1.0-stable:
$ git tag --contains 15ec0fd9d490dd5c8a153401360233c6ee947c24
lxc-1.0.8


@ Arches,

please test and mark stable: =app-emulation/lxc-1.0.8

[Comment 2 Agostino Sarubbo 2016-11-25 18:29:18 UTC]

amd64 stable

[Comment 3 Agostino Sarubbo 2016-11-25 18:56:07 UTC]

x86 stable

[Comment 4 Agostino Sarubbo 2017-01-18 10:04:26 UTC]

ppc64 stable.

Maintainer(s), please cleanup.
Security, please vote.

[Comment 5 Aaron Bauman (RETIRED) 2017-01-24 08:51:07 UTC]

https://github.com/gentoo/gentoo/pull/3619

[Comment 6 Thomas Deutschmann (RETIRED) 2017-01-30 00:48:55 UTC]

GLSA Vote: No

[Comment 7 Aaron Bauman (RETIRED) 2017-02-22 10:50:20 UTC]

tree is clean