CVE-2016-8649
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 host's /proc, to access the rest of the host's filesystem via the openat() family of syscalls.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.81%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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 host's /proc, to access the rest of the host's filesystem via the openat() family of syscalls.
- CVSS 3.0
- 9.1 CRITICALCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 2.81% probability · 86th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- linuxcontainers/lxc
- Source
- secalert@redhat.com
References
- http://www.securityfocus.com/bid/94498Third Party Advisory, VDB Entry
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=845465Third Party Advisory
- https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1639345Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1398242Issue Tracking, Patch
- https://github.com/lxc/lxc/commit/81f466d05f2a89cb4f122ef7f593ff3f279b165cPatch, Vendor Advisory
- https://security-tracker.debian.org/tracker/CVE-2016-8649Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/94498Third Party Advisory, VDB Entry
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=845465Third Party Advisory
- https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1639345Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1398242Issue Tracking, Patch
- https://github.com/lxc/lxc/commit/81f466d05f2a89cb4f122ef7f593ff3f279b165cPatch, Vendor Advisory
- https://security-tracker.debian.org/tracker/CVE-2016-8649Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.