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nvd[email protected]NVD:CVE-2014-7975
HistoryOct 13, 2014 - 10:55 a.m.

CVE-2014-7975

2014-10-1310:55:09
web.nvd.nist.gov
7

CVSS2

4.9

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

AI Score

5.7

Confidence

High

EPSS

0

Percentile

10.1%

The do_umount function in fs/namespace.c in the Linux kernel through 3.17 does not require the CAP_SYS_ADMIN capability for do_remount_sb calls that change the root filesystem to read-only, which allows local users to cause a denial of service (loss of writability) by making certain unshare system calls, clearing the / MNT_LOCKED flag, and making an MNT_FORCE umount system call.

Affected configurations

Nvd
Node
linuxlinux_kernelRange≤3.17
Node
canonicalubuntu_linuxMatch10.04-
OR
canonicalubuntu_linuxMatch12.04esm
OR
canonicalubuntu_linuxMatch14.04esm
OR
canonicalubuntu_linuxMatch14.10
VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
canonicalubuntu_linux10.04cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:-:*:*:*
canonicalubuntu_linux12.04cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
canonicalubuntu_linux14.04cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
canonicalubuntu_linux14.10cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:*

CVSS2

4.9

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

AI Score

5.7

Confidence

High

EPSS

0

Percentile

10.1%