CVE-2017-18270 : In the Linux kernel before 4.13.5, a local user could create keyrings for other

In the Linux kernel before 4.13.5, a local user could create keyrings for other users via keyctl commands, setting unwanted defaults or causing a denial of service.

Published 2018-05-18 16:29:00

Updated 2020-08-14 20:15:13

Source MITRE

View at NVD, CVE.org

Vulnerability category: Denial of service

Products affected by CVE-2017-18270

Linux » Linux Kernel
Versions before (<) 4.13.5
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2017-18270

EPSS FAQ

0.02%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 2 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2017-18270

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
3.6	LOW	AV:L/AC:L/Au:N/C:N/I:P/A:P	3.9	4.9	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: Partial Availability Impact: Partial
7.1	HIGH	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H	1.8	5.2	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: High Availability: High

References for CVE-2017-18270

https://usn.ubuntu.com/3754-1/

USN-3754-1: Linux kernel vulnerabilities | Ubuntu security notices

CVEs referencing this url
http://www.securityfocus.com/bid/104254

Linux Kernel CVE-2017-18270 Local Denial of Service Vulnerability
Third Party Advisory;VDB Entry
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=237bbd29f7a049d310d907f4b2716a7feef9abf3

kernel/git/torvalds/linux.git - Linux kernel source tree
Patch
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5

Release Notes

CVEs referencing this url
https://bugzilla.redhat.com/show_bug.cgi?id=1856774#c9

1856774 – (CVE-2020-14353) CVE-2020-14353 kernel: keys: for keyctl prevent creating a different user's keyrings in RHEL-6.10
https://github.com/torvalds/linux/commit/237bbd29f7a049d310d907f4b2716a7feef9abf3

KEYS: prevent creating a different user's keyrings · torvalds/linux@237bbd2 · GitHub
Patch
https://bugzilla.redhat.com/show_bug.cgi?id=1856774#c11

1856774 – (CVE-2020-14353) CVE-2020-14353 kernel: keys: for keyctl prevent creating a different user's keyrings in RHEL-6.10
https://support.f5.com/csp/article/K37301725

Article: K37301725 - Linux kernel vulnerability CVE-2017-18270
https://bugzilla.redhat.com/show_bug.cgi?id=1580979

1580979 – (CVE-2017-18270) CVE-2017-18270 kernel: improper keyrings creation

Jump to

Vulnerability Details : CVE-2017-18270

Products affected by CVE-2017-18270

Exploit prediction scoring system (EPSS) score for CVE-2017-18270

CVSS scores for CVE-2017-18270

References for CVE-2017-18270