CVE-2014-5206

high
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Description

The do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNT_LOCK_READONLY bit across a remount of a bind mount, which allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms via a "mount -o remount" command within a user namespace.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a6138db815df5ee542d848318e5dae681590fccd

http://www.openwall.com/lists/oss-security/2014/08/13/4

http://www.securityfocus.com/bid/69214

http://www.ubuntu.com/usn/USN-2317-1

http://www.ubuntu.com/usn/USN-2318-1

https://bugzilla.redhat.com/show_bug.cgi?id=1129662

https://github.com/torvalds/linux/commit/a6138db815df5ee542d848318e5dae681590fccd

Details

Source: MITRE

Published: 2014-08-18

Updated: 2020-08-14

Type: CWE-269

Risk Information

CVSS v2

Base Score: 7.2

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

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

Tenable Plugins

View all (10 total)

IDNameProductFamilySeverity
137516EulerOS 2.0 SP2 : kernel (EulerOS-SA-2020-1674)NessusHuawei Local Security Checks
critical
132134EulerOS 2.0 SP3 : kernel (EulerOS-SA-2019-2599)NessusHuawei Local Security Checks
high
124974EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1521)NessusHuawei Local Security Checks
critical
80152openSUSE Security Update : the Linux Kernel (openSUSE-SU-2014:1677-1)NessusSuSE Local Security Checks
high
78617Mandriva Linux Security Advisory : kernel (MDVSA-2014:201)NessusMandriva Local Security Checks
high
78360Amazon Linux AMI : kernel (ALAS-2014-417)NessusAmazon Linux Local Security Checks
high
77269Fedora 19 : kernel-3.14.17-100.fc19 (2014-9449)NessusFedora Local Security Checks
high
77237Ubuntu 14.04 LTS : linux vulnerabilities (USN-2318-1)NessusUbuntu Local Security Checks
high
77236Ubuntu 12.04 LTS : linux-lts-trusty vulnerabilities (USN-2317-1)NessusUbuntu Local Security Checks
high
77233Fedora 20 : kernel-3.15.10-200.fc20 (2014-9466)NessusFedora Local Security Checks
high