Vulnerability Monitor

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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.

Security Impact Summary

This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.1, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 1 product from linuxcontainers organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2017, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2017-05-01T06:59:00.157

Last Modified

2026-05-13T00:24:29.033

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 9.1 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Access Vector: NETWORK
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

8.0

Impact Score

10.0

Weaknesses

Type: Primary
CWE-264

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	linuxcontainers	lxc	< 1.0.9	Yes
Application	linuxcontainers	lxc	< 2.0.6	Yes

References

http://www.securityfocus.com/bid/94498 Third Party Advisory, VDB Entry ([email protected])
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=845465 Third Party Advisory ([email protected])
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1639345 Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1398242 Issue Tracking, Patch ([email protected])
https://github.com/lxc/lxc/commit/81f466d05f2a89cb4f122ef7f593ff3f279b165c Patch, Vendor Advisory ([email protected])
https://security-tracker.debian.org/tracker/CVE-2016-8649 Third Party Advisory, VDB Entry ([email protected])
http://www.securityfocus.com/bid/94498 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=845465 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1639345 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1398242 Issue Tracking, Patch (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/lxc/lxc/commit/81f466d05f2a89cb4f122ef7f593ff3f279b165c Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security-tracker.debian.org/tracker/CVE-2016-8649 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For linuxcontainers's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.