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…
Does this matter?
Lower severity and a low EPSS score (0.88%). Track it; it rarely justifies an emergency change on its own.
Description
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 2.0
- 6.2 MEDIUMAV:L/AC:H/Au:N/C:C/I:C/A:C
- EPSS
- 0.88% probability · 57th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-269
- Affected
- linux/linux kernel · canonical/ubuntu linux
- Source
- cve@mitre.org
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9566d6742852c527bf5af38af5cbb878dad75705
- http://osvdb.org/show/osvdb/110055Broken Link
- http://packetstormsecurity.com/files/128595/Linux-Kernel-3.16.1-FUSE-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
- http://seclists.org/oss-sec/2014/q3/352Mailing List, Third Party Advisory
- http://www.exploit-db.com/exploits/34923Exploit, Third Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2014/08/13/4Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/69216Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-2317-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2318-1Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1129662Issue Tracking, Patch, Third Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/95266Third Party Advisory, VDB Entry
- https://github.com/torvalds/linux/commit/9566d6742852c527bf5af38af5cbb878dad75705Patch, Third Party Advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9566d6742852c527bf5af38af5cbb878dad75705
- http://osvdb.org/show/osvdb/110055Broken Link
- http://packetstormsecurity.com/files/128595/Linux-Kernel-3.16.1-FUSE-Privilege-Escalation.htmlExploit, Third Party Advisory, VDB Entry
- http://seclists.org/oss-sec/2014/q3/352Mailing List, Third Party Advisory
- http://www.exploit-db.com/exploits/34923Exploit, Third Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2014/08/13/4Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/69216Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-2317-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2318-1Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1129662Issue Tracking, Patch, Third Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/95266Third Party Advisory, VDB Entry
- https://github.com/torvalds/linux/commit/9566d6742852c527bf5af38af5cbb878dad75705Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.