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Vulnerability Details : CVE-2014-7970

The pivot_root implementation in fs/namespace.c in the Linux kernel through 3.17 does not properly interact with certain locations of a chroot directory, which allows local users to cause a denial of service (mount-tree loop) via . (dot) values in both arguments to the pivot_root system call.
Publish Date : 2014-10-13 Last Update Date : 2020-08-14
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- CVSS Scores & Vulnerability Types

CVSS Score
4.9
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 400

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2017:1842: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20171842 unix
RHSA-2017:2077: kernel-rt security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20172077 unix
USN-2419-1 -- Linux kernel (Trusty HWE) vulnerabilities oval:org.mitre.oval:def:28026 unix
USN-2420-1 -- Linux kernel vulnerabilities oval:org.mitre.oval:def:28454 unix
USN-2447-1 -- Linux kernel (Utopic HWE) vulnerabilities oval:org.mitre.oval:def:28556 unix
USN-2447-2 -- Linux kernel (Utopic HWE) regression oval:org.mitre.oval:def:27960 unix
USN-2448-1 -- Linux kernel vulnerabilities oval:org.mitre.oval:def:28611 unix
USN-2448-2 -- Linux kernel regression oval:org.mitre.oval:def:28608 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2014-7970

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 12.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 14.04 * * * Version Details Vulnerabilities
3 OS Linux Linux Kernel * * * * Version Details Vulnerabilities
4 OS Novell Suse Linux Enterprise Server 11.0 SP3 * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 2
Linux Linux Kernel 1
Novell Suse Linux Enterprise Server 1

- References For CVE-2014-7970

http://www.ubuntu.com/usn/USN-2419-1
UBUNTU USN-2419-1
http://www.ubuntu.com/usn/USN-2420-1
UBUNTU USN-2420-1
http://secunia.com/advisories/60174
SECUNIA 60174
http://www.ubuntu.com/usn/USN-2514-1
UBUNTU USN-2514-1
http://www.ubuntu.com/usn/USN-2513-1
UBUNTU USN-2513-1
https://exchange.xforce.ibmcloud.com/vulnerabilities/96921
XF linux-kernel-cve20147970-dos(96921)
http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
SUSE SUSE-SU-2015:0736
http://secunia.com/advisories/61142
SECUNIA 61142
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0d0826019e529f21c84687521d03f60cd241ca7d CONFIRM
http://www.securitytracker.com/id/1030991
SECTRACK 1030991
http://www.securityfocus.com/bid/70319
BID 70319 Linux Kernel VFS 'pivot_root()' Function Denial of Service Vulnerability Release Date:2015-03-08
http://www.openwall.com/lists/oss-security/2014/10/08/21
MLIST [oss-security] 20141008 CVE-2014-7970: Linux VFS denial of service
https://bugzilla.redhat.com/show_bug.cgi?id=1151095 CONFIRM
http://www.spinics.net/lists/linux-fsdevel/msg79153.html
MLIST [linux-fsdevel] 20141008 [PATCH] mnt: Prevent pivot_root from creating a loop in the mount tree
https://access.redhat.com/errata/RHSA-2017:2077
REDHAT RHSA-2017:2077
https://access.redhat.com/errata/RHSA-2017:1842
REDHAT RHSA-2017:1842

- Metasploit Modules Related To CVE-2014-7970

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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