CVE-2016-2854
Vulnerability Summary
Timeline
Description
The aufs module for the Linux kernel 3.x and 4.x does not properly maintain POSIX ACL xattr data, which allows local users to gain privileges by leveraging a group-writable setgid directory.
CVSS Metrics
- v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- v2.0•MEDIUM•Score: 4.6AV:L/AC:L/Au:N/C:P/I:P/A:P
EPSS Trends
Current EPSS score: 0.95%• Percentile: 60%
Techniques & Countermeasures
- CWE-269•Improper Privilege Management
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
Affected Systems
- debian•linux
< 3.18-1~exp1 | < 3.18-1~exp1 | < 3.18-1~exp1 | < 3.18-1~exp1
- ubuntu•linux
all | < 4.4.0-222.255
- ubuntu•linux-aws
< 4.4.0-1102.107 | < 4.4.0-1138.152
- ubuntu•linux-aws-fips
all
- ubuntu•linux-azure
all | all | all | all | all | all
- ubuntu•linux-azure-5.11
all
- ubuntu•linux-azure-5.13
all
- ubuntu•linux-azure-5.15
all
- ubuntu•linux-azure-5.19
all
- ubuntu•linux-azure-5.4
all
- ubuntu•linux-azure-5.8
all
- ubuntu•linux-azure-6.11
all
- ubuntu•linux-azure-6.14
all
- ubuntu•linux-azure-6.17
all
- ubuntu•linux-azure-6.2
all
- ubuntu•linux-azure-6.5
all
- ubuntu•linux-azure-6.8
all
- ubuntu•linux-azure-7.0
all
- ubuntu•linux-azure-fde
all | all | all | all | all
- ubuntu•linux-azure-fde-5.15
all
- ubuntu•linux-azure-fde-5.19
all
- ubuntu•linux-azure-fde-6.14
all
- ubuntu•linux-azure-fde-6.17
all
- ubuntu•linux-azure-fde-6.2
all
- ubuntu•linux-azure-fde-6.8
all
- ubuntu•linux-azure-fde-7.0
all
- ubuntu•linux-azure-fips
all
- ubuntu•linux-azure-nvidia
all
- ubuntu•linux-azure-nvidia-6.14
all
- ubuntu•linux-bluefield
all
- ubuntu•linux-fips
all
- ubuntu•linux-gcp
all
- ubuntu•linux-gcp-4.15
all
- ubuntu•linux-gcp-fips
all
- ubuntu•linux-gke
all | all | all
- ubuntu•linux-gke-4.15
all
- ubuntu•linux-gke-5.15
all
- ubuntu•linux-gkeop
all | all
- ubuntu•linux-gkeop-5.15
all
- ubuntu•linux-hwe-edge
all
- ubuntu•linux-ibm
all | all | all
- ubuntu•linux-ibm-5.15
all
- ubuntu•linux-ibm-6.8
all
- ubuntu•linux-intel-iot-realtime
all | all
- ubuntu•linux-kvm
< 4.4.0-1103.112
- ubuntu•linux-lts-xenial
< 4.4.0-222.255~14.04.1
- ubuntu•linux-nvidia
all | all
- ubuntu•linux-nvidia-6.11
all
- ubuntu•linux-nvidia-6.8
all
- ubuntu•linux-nvidia-7.0
all
Showing first 50 affected entries in server-rendered view.
References (8)
- http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces/
- http://www.openwall.com/lists/oss-security/2016/02/24/9
- https://sourceforge.net/p/aufs/mailman/message/34864744/
- http://www.securityfocus.com/bid/96838
- https://ubuntu.com/security/CVE-2016-2854
- https://ubuntu.com/security/notices/USN-5343-1
- https://www.cve.org/CVERecord?id=CVE-2016-2854
- https://security-tracker.debian.org/tracker/CVE-2016-2854