U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

CVE-2017-18344 Detail

Description

The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel before 4.14.8 doesn't properly validate the sigevent->sigev_notify field, which leads to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allows userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE).


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
http://www.securityfocus.com/bid/104909 Third Party Advisory  VDB Entry 
http://www.securitytracker.com/id/1041414 Third Party Advisory  VDB Entry 
https://access.redhat.com/errata/RHSA-2018:2948 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:3083 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:3096 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:3459 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:3540 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:3586 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:3590 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2018:3591 Third Party Advisory 
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8 Third Party Advisory 
https://github.com/torvalds/linux/commit/cef31d9af908243421258f1df35a4a644604efbe Patch  Third Party Advisory 
https://usn.ubuntu.com/3742-1/ Third Party Advisory 
https://usn.ubuntu.com/3742-2/ Third Party Advisory 
https://www.exploit-db.com/exploits/45175/ Exploit  Third Party Advisory  VDB Entry 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-125 Out-of-bounds Read cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

11 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-18344
NVD Published Date:
07/26/2018
NVD Last Modified:
10/15/2020
Source:
MITRE