CVE-2016-8649

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.

Category

9.1
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 2.15% Top 20%
Vendor Advisory github.com
Affected: n/a LXC before 1.0.9 and 2.x before 2.0.6
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1398242 patch issue tracking
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1639345 third party advisory
https://github.com/lxc/lxc/commit/81f466d05f2a89cb4f122ef7f593ff3f279b165c patch vendor advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=845465 third party advisory
https://security-tracker.debian.org/tracker/CVE-2016-8649 third party advisory vdb entry
http://www.securityfocus.com/bid/94498 third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2016-8649?
CVE-2016-8649 has been scored as a critical severity vulnerability.
How to fix CVE-2016-8649?
To fix CVE-2016-8649, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-8649 being actively exploited in the wild?
It is possible that CVE-2016-8649 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2016-8649?
CVE-2016-8649 affects n/a LXC before 1.0.9 and 2.x before 2.0.6.
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