CVE-2017-5669

The do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address calculated by a certain rounding operation, which allows local users to map page zero, and consequently bypass a protection mechanism that exists for the mmap system call, by making crafted shmget and shmat system calls in a privileged context.

CVSS v3.0 7.8 HIGH
CVSS v2.0 4.6 MEDIUM

7.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.6^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/torvalds/linux/commit/e1d35d4dc7f089e6c9c080d556feedf9c706f0c7	Patch Third Party Advisory
https://bugzilla.kernel.org/show_bug.cgi?id=192931	Issue Tracking Patch Vendor Advisory
http://www.securityfocus.com/bid/96754	Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1037918	Third Party Advisory VDB Entry
http://www.debian.org/security/2017/dsa-3804	Third Party Advisory
https://usn.ubuntu.com/3583-2/	Third Party Advisory
https://usn.ubuntu.com/3583-1/	Third Party Advisory
https://github.com/torvalds/linux/commit/95e91b831f87ac8e1f8ed50c14d709089b4e01b8	Patch Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

Configuration 3 (hide)

OR	cpe:2.3:o:canonical:ubuntu_linux:12.04::::esm:::
	cpe:2.3:o:canonical:ubuntu_linux:14.04::::esm:::

Information

Published : 2017-02-24 07:59

Updated : 2020-10-09 07:49

NVD link : CVE-2017-5669

Mitre link : CVE-2017-5669

JSON object : View

CWE

NVD-CWE-noinfo

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Products Affected

debian

debian_linux

canonical

ubuntu_linux

linux

linux_kernel

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