CVE-2017-18270

kernel: improper keyrings creation

Severity Score

7.1

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

En el kernel de Linux, en versiones anteriores a la 4.13.5, un usuario local podría crear keyrings para otros usuarios mediante comandos keyctl, estableciendo configuraciones por defecto no deseadas o provocando una denegación de servicio (DoS).

A flaw was found in the Linux kernel in the way a local user could create keyrings for other users via keyctl commands. This may allow an attacker to set unwanted defaults, a denial of service, or possibly leak keyring information between users.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-05-18 CVE Reserved
2018-05-18 CVE Published
2023-03-08 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-287: Improper Authentication

CAPEC

References (10)

URL	Tag	Source
http://www.securityfocus.com/bid/104254	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1856774#c11	X_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1856774#c9	X_refsource_misc
https://support.f5.com/csp/article/K37301725	X_refsource_confirm
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5	Release Notes

URL	Date	SRC

URL	Date	SRC
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=237bbd29f7a049d310d907f4b2716a7feef9abf3	2020-08-14
https://github.com/torvalds/linux/commit/237bbd29f7a049d310d907f4b2716a7feef9abf3	2020-08-14

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=1580979	2018-04-10
https://usn.ubuntu.com/3754-1	2020-08-14
https://access.redhat.com/security/cve/CVE-2017-18270	2018-04-10

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.13.5 Search vendor "Linux" for product "Linux Kernel" and version " < 4.13.5"		-		Affected