CVE-2014-5207

Linux Kernel < 3.16.1 - 'Remount FUSE' Local Privilege Escalation

Severity Score

6.2

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV, MNT_NOSUID, and MNT_NOEXEC and changing MNT_ATIME_MASK during a remount of a bind mount, which allows local users to gain privileges, interfere with backups and auditing on systems that had atime enabled, or cause a denial of service (excessive filesystem updating) on systems that had atime disabled via a "mount -o remount" command within a user namespace.

fs/namespace.c en el kernel de Linux hasta 3.16.1 no restringe debidamente la limpieza MNT_NODEV, MNT_NOSUID, y MNT_NOEXEC y el cambio MNT_ATIME_MASK durante un remontaje de un montaje bind, lo que permite a usuarios locales ganar privilegios, interferir con copias de seguridad y auditoria en sistemas que tenían atime habilitado, o causar una denegación de servicio (la actualización excesiva de sistemas de ficheros) en sistemas que tenían atime deshabilitado a través de un comando 'mount -o remount' dentro de un espacio para el nombre del usuario.

*Credits: N/A

CVSS Scores

NISTv2 6.2

Attack Vector

Local

Attack Complexity

High

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2014-08-13 CVE Reserved
2014-08-18 CVE Published
2014-10-09 First Exploit
2023-11-08 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-269: Improper Privilege Management

CAPEC

References (13)

URL	Tag	Source
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9566d6742852c527bf5af38af5cbb878dad75705	X_refsource_confirm
http://osvdb.org/show/osvdb/110055	Broken Link
http://seclists.org/oss-sec/2014/q3/352	Mailing List
http://www.openwall.com/lists/oss-security/2014/08/13/4	Mailing List
http://www.securityfocus.com/bid/69216	Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/95266	Third Party Advisory

URL	Date	SRC
https://www.exploit-db.com/exploits/34923	2014-10-09
http://packetstormsecurity.com/files/128595/Linux-Kernel-3.16.1-FUSE-Privilege-Escalation.html	2024-08-06
http://www.exploit-db.com/exploits/34923	2024-08-06

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=1129662	2023-11-07
https://github.com/torvalds/linux/commit/9566d6742852c527bf5af38af5cbb878dad75705	2023-11-07

URL	Date	SRC
http://www.ubuntu.com/usn/USN-2317-1	2023-11-07
http://www.ubuntu.com/usn/USN-2318-1	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				<= 3.16.1 Search vendor "Linux" for product "Linux Kernel" and version " <= 3.16.1"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"		esm		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		esm		Affected