CVE-2016-8649
published 2017-05-01CVE-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…
PriorityP346critical9.1CVSS 3.0
AVNACLPRHUINSCCHIHAH
EPSS
2.81%
84.9th percentile
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.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | lxc | < lxc 1:2.0.6-1 (bookworm) | lxc 1:2.0.6-1 (bookworm) |
| linuxcontainers | lxc | < 1.0.9 | 1.0.9 |
| linuxcontainers | lxc | >= 0 < 1:2.0.6-1 | 1:2.0.6-1 |
| linuxcontainers | lxc | >= 0 < 1:2.0.6-1 | 1:2.0.6-1 |
| linuxcontainers | lxc | >= 0 < 1:2.0.6-1 | 1:2.0.6-1 |
| linuxcontainers | lxc | >= 0 < 1:2.0.6-1 | 1:2.0.6-1 |
| linuxcontainers | lxc | >= 2.0.0 < 2.0.6 | 2.0.6 |
CVSS provenance
nvdv3.09.1CRITICALCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
nvdv2.09.0CRITICALAV:N/AC:L/Au:S/C:C/I:C/A:C
osv9.1CRITICAL
vendor_debian9.1CRITICAL
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GHSA
GHSA-vp8j-2cg9-6pvv: lxc-attach in LXC before 1
ghsa_unreviewed·2022-05-14
CVE-2016-8649 [CRITICAL] GHSA-vp8j-2cg9-6pvv: lxc-attach in LXC before 1
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.
OSV
CVE-2016-8649: lxc-attach in LXC before 1
osv·2017-05-01·CVSS 9.1
CVE-2016-8649 [CRITICAL] CVE-2016-8649: lxc-attach in LXC before 1
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.
Ubuntu
LXC vulnerability
vendor_ubuntu·2016-11-23
CVE-2016-8649 LXC vulnerability
Title: LXC vulnerability
Summary: LXC could be made to allow containers to access to the host filesystem.
Roman Fiedler discovered a directory traversal flaw in lxc-attach. An
attacker with access to an LXC container could exploit this flaw to access
files outside of the container.
Instructions: In general, a standard system update will make all the necessary changes.
Debian
CVE-2016-8649: lxc - lxc-attach in LXC before 1.0.9 and 2.x before 2.0.6 allows an attacker inside of...
vendor_debian·2016·CVSS 9.1
CVE-2016-8649 [CRITICAL] CVE-2016-8649: lxc - lxc-attach in LXC before 1.0.9 and 2.x before 2.0.6 allows an attacker inside of...
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.
Scope: local
bookworm: resolved (fixed in 1:2.0.6-1)
bullseye: resolved (fixed in 1:2.0.6-1)
forky: resolved (fixed in 1:2.0.6-1)
sid: resolved (fixed in 1:2.0.6-1)
trixie: resolved (fixed in 1:2.0.6-1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2016-8649 lxc: lxc-attach to malicious container allows access to host [fedora-all]
bugzilla·2016-11-24·CVSS 9.1
CVE-2016-8649 [CRITICAL] CVE-2016-8649 lxc: lxc-attach to malicious container allows access to host [fedora-all]
CVE-2016-8649 lxc: lxc-attach to malicious container allows access to host [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported ve
Bugzilla
CVE-2016-8649 lxc: lxc-attach to malicious container allows access to host [epel-all]
bugzilla·2016-11-24·CVSS 9.1
CVE-2016-8649 [CRITICAL] CVE-2016-8649 lxc: lxc-attach to malicious container allows access to host [epel-all]
CVE-2016-8649 lxc: lxc-attach to malicious container allows access to host [epel-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora EPEL.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported
Bugzilla
CVE-2016-8649 lxc: lxc-attach to malicious container allows access to host
bugzilla·2016-11-24·CVSS 9.1
CVE-2016-8649 [CRITICAL] CVE-2016-8649 lxc: lxc-attach to malicious container allows access to host
CVE-2016-8649 lxc: lxc-attach to malicious container allows access to host
CVE-2016-8649 was assigned to the issue that 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. The file descriptor is needed to write to /proc//attr/current or /proc//attr/exec to set the AppArmor/SELinux label of the attached process.
Upstream bug:
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1639345
Upstream patch:
https://github.com/lxc/lxc/commit/81f466d05f2a89cb4f122ef7f593ff3f279b165c
References:
http://seclists.org/oss-sec/2016/q4/515
Discussion:
Created lxc tracking bugs for this issue:
Affects: fedora-all [bug 1398243]
Affects: epel-all [bug 1398245]
http://www.securityfocus.com/bid/94498https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=845465https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1639345https://bugzilla.redhat.com/show_bug.cgi?id=1398242https://github.com/lxc/lxc/commit/81f466d05f2a89cb4f122ef7f593ff3f279b165chttps://security-tracker.debian.org/tracker/CVE-2016-8649http://www.securityfocus.com/bid/94498https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=845465https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1639345https://bugzilla.redhat.com/show_bug.cgi?id=1398242https://github.com/lxc/lxc/commit/81f466d05f2a89cb4f122ef7f593ff3f279b165chttps://security-tracker.debian.org/tracker/CVE-2016-8649
2017-05-01
Published