CVE-2016-2853
published 2016-05-02CVE-2016-2853: The aufs module for the Linux kernel 3.x and 4.x does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an…
PriorityP344high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EXPLOIT
EPSS
0.91%
55.3th percentile
The aufs module for the Linux kernel 3.x and 4.x does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an aufs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 3.18-1~exp1 (bookworm) | linux 3.18-1~exp1 (bookworm) |
| linux | linux_kernel | >= 0 < 3.18-1~exp1 | 3.18-1~exp1 |
| linux | linux_kernel | >= 0 < 3.18-1~exp1 | 3.18-1~exp1 |
| linux | linux_kernel | >= 0 < 3.18-1~exp1 | 3.18-1~exp1 |
| linux | linux_kernel | >= 0 < 3.18-1~exp1 | 3.18-1~exp1 |
| linux | linux_kernel | >= 0 < 4.4.0-222.255 | 4.4.0-222.255 |
| linux | linux_kernel | 3.0.0 – 3.19.8 | — |
| linux | linux_kernel | 4.0.0 – 4.20.15 | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.04.4MEDIUMAV:L/AC:M/Au:N/C:P/I:P/A:P
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
vendor_ubuntu7.8HIGH
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Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2022-03-22·CVSS 7.8
CVE-2020-25673 [HIGH] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the
Linux kernel did not properly restrict access to the cgroups v1
release_agent feature. A local attacker could use this to gain
administrative privileges. (CVE-2022-0492)
It was discovered that the aufs file system in the Linux kernel did not
properly restrict mount namespaces, when mounted with the non-default
allow_userns option set. A local attacker could use this to gain
administrative privileges. (CVE-2016-2853)
It was discovered that the aufs file system in the Linux kernel did not
properly maintain POSIX ACL xattr data, when mounted with the non-default
allow_userns option. A local attacker could possibly us
Red Hat
kernel: aufs module does not properly restrict the mount namespace
vendor_redhat·2016-02-24·CVSS 7.8
CVE-2016-2853 [HIGH] CWE-284 kernel: aufs module does not properly restrict the mount namespace
kernel: aufs module does not properly restrict the mount namespace
The aufs module for the Linux kernel 3.x and 4.x does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an aufs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program.
Package: kernel (Red Hat Enterprise Linux 5) - Not affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-alt (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 7) - Not affected
Package: kernel (Red Hat Enterprise Linux 8) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 8) - Not affected
Package: kernel (Red Hat Enterprise MRG 2) - Not
Debian
CVE-2016-2853: linux - The aufs module for the Linux kernel 3.x and 4.x does not properly restrict the ...
vendor_debian·2016·CVSS 7.8
CVE-2016-2853 [HIGH] CVE-2016-2853: linux - The aufs module for the Linux kernel 3.x and 4.x does not properly restrict the ...
The aufs module for the Linux kernel 3.x and 4.x does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an aufs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program.
Scope: local
bookworm: resolved (fixed in 3.18-1~exp1)
bullseye: resolved (fixed in 3.18-1~exp1)
forky: resolved (fixed in 3.18-1~exp1)
sid: resolved (fixed in 3.18-1~exp1)
trixie: resolved (fixed in 3.18-1~exp1)
GHSA
GHSA-xrmj-c7vj-9c4m: The aufs module for the Linux kernel 3
ghsa_unreviewed·2022-05-13
CVE-2016-2853 [HIGH] CWE-269 GHSA-xrmj-c7vj-9c4m: The aufs module for the Linux kernel 3
The aufs module for the Linux kernel 3.x and 4.x does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an aufs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program.
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
osv·2022-03-22·CVSS 7.8
CVE-2022-0492 [HIGH] linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities
Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the
Linux kernel did not properly restrict access to the cgroups v1
release_agent feature. A local attacker could use this to gain
administrative privileges. (CVE-2022-0492)
It was discovered that the aufs file system in the Linux kernel did not
properly restrict mount namespaces, when mounted with the non-default
allow_userns option set. A local attacker could use this to gain
administrative privileges. (CVE-2016-2853)
It was discovered that the aufs file system in the Linux kernel did not
properly maintain POSIX ACL xattr data, when mounted with the non-default
allow_userns option. A local attacker could possibly use this to gain
elevated privileges. (CVE
OSV
CVE-2016-2853: The aufs module for the Linux kernel 3
osv·2016-05-02·CVSS 7.8
CVE-2016-2853 [HIGH] CVE-2016-2853: The aufs module for the Linux kernel 3
The aufs module for the Linux kernel 3.x and 4.x does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an aufs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program.
No detection rules found.
Bugzilla
CVE-2016-2853 kernel: aufs module does not properly restrict the mount namespace
bugzilla·2020-08-24·CVSS 7.8
CVE-2016-2853 [HIGH] CVE-2016-2853 kernel: aufs module does not properly restrict the mount namespace
CVE-2016-2853 kernel: aufs module does not properly restrict the mount namespace
The aufs module for the Linux kernel does not properly restrict the mount namespace, which allows local users to gain privileges by mounting an aufs filesystem on top of a FUSE filesystem, and then executing a crafted setuid program.
References:
http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces/
http://www.openwall.com/lists/oss-security/2016/02/24/9
Discussion:
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1871723]
---
Aufs is not an upstream kernel module, it was never merged as overlayfs was preferred.
Bugzilla
CVE-2016-2853 kernel: aufs module does not properly restrict the mount namespace [fedora-all]
bugzilla·2020-08-24·CVSS 7.8
CVE-2016-2853 [HIGH] CVE-2016-2853 kernel: aufs module does not properly restrict the mount namespace [fedora-all]
CVE-2016-2853 kernel: aufs module does not properly restrict the mount namespace [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-all.
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 su
http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces/http://www.openwall.com/lists/oss-security/2016/02/24/9http://www.openwall.com/lists/oss-security/2021/10/18/1http://www.securityfocus.com/bid/96839https://sourceforge.net/p/aufs/mailman/message/34864744/http://www.halfdog.net/Security/2016/AufsPrivilegeEscalationInUserNamespaces/http://www.openwall.com/lists/oss-security/2016/02/24/9http://www.openwall.com/lists/oss-security/2021/10/18/1http://www.securityfocus.com/bid/96839https://sourceforge.net/p/aufs/mailman/message/34864744/
2016-05-02
Published