CVE-2014-5207

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.

CVSS v2.0 NVD

6.2 MEDIUMAV:L/AC:H/Au:N/C:C/I:C/A:C

EPSS

0.88% chance of exploitation in the next 30 days, 58th percentile

Published

2014-08-18

Updated

2024-08-06

Proof-of-concept exploits (2)

• http://packetstormsecurity.com/files/128595/Linux-Kernel-3.16.1-FUSE-Privilege-Escalation…
• http://www.exploit-db.com/exploits/34923

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/34923

Security advisories

• http://seclists.org/oss-sec/2014/q3/352
• http://www.openwall.com/lists/oss-security/2014/08/13/4
• http://www.securityfocus.com/bid/69216
• 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://exchange.xforce.ibmcloud.com/vulnerabilities/95266
• torvalds/linux/commit/9566d6742852c527bf5af38af5cbb878dad75705

References

• CVE Record
• NVD entry