CVE-2016-8649

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Summary

CVECVE-2016-8649
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-05-01 06:59:00 UTC
Updated2025-04-20 01:37:25 UTC
Descriptionlxc-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.

Risk And Classification

Primary CVSS: v3.0 9.1 CRITICAL from [email protected]

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Problem Types: CWE-264 | container bypass

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary9.1CRITICALCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
2.0[email protected]Primary9AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
Single
Confidentiality
Complete
Integrity
Complete
Availability
Complete

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Linuxcontainers Lxc All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na LXC Before 1.0.9 And 2.x Before 2.0.6 affected LXC before 1.0.9 and 2.x before 2.0.6 Not specified

References

ReferenceSourceLinkTags
CVE-2016-8649 af854a3a-2127-422b-91ae-364da2661108 security-tracker.debian.org Third Party Advisory, VDB Entry
#845465 - lxc: CVE-2016-8649: attach: do not send procfd to attached process - Debian Bug report logs af854a3a-2127-422b-91ae-364da2661108 bugs.debian.org Third Party Advisory
attach: do not send procfd to attached process · lxc/lxc@81f466d · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Vendor Advisory
1398242 – (CVE-2016-8649) CVE-2016-8649 lxc: lxc-attach to malicious container allows access to host af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Patch
LXC CVE-2016-8649 Directory Traversal Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Bug #1639345 “lxc-attach to malicious container allows access to...” : Bugs : lxc package : Ubuntu af854a3a-2127-422b-91ae-364da2661108 bugs.launchpad.net Third Party Advisory
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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