CVE-2017-7472

Linux Kernel < 4.10.13 - 'keyctl_set_reqkey_keyring' Local Denial of Service

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The KEYS subsystem in the Linux kernel before 4.10.13 allows local users to cause a denial of service (memory consumption) via a series of KEY_REQKEY_DEFL_THREAD_KEYRING keyctl_set_reqkey_keyring calls.

El subsistema KEYS en el kernel de Linux anterior a 4.10.13 permite a los usuarios locales causar una denegación de servicio (consumo de memoria) a través de una serie de llamadas KEY_REQKEY_DEFL_THREAD_KEYRING keyctl_set_reqkey_keyring.

A vulnerability was found in the Linux kernel where the keyctl_set_reqkey_keyring() function leaks the thread keyring. This allows an unprivileged local user to exhaust kernel memory and thus cause a DoS.

Linux Kernel versions prior to 4.10.13 suffer from a keyctl_set_reqkey_keyring local denial of service vulnerability.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-04-05 CVE Reserved
2017-05-11 CVE Published
2017-06-08 First Exploit
2023-05-08 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-400: Uncontrolled Resource Consumption
CWE-404: Improper Resource Shutdown or Release

CAPEC

References (17)

URL	Tag	Source
http://www.securityfocus.com/bid/98422	Vdb Entry
http://www.securitytracker.com/id/1038471	Vdb Entry
https://lkml.org/lkml/2017/4/1/235	Broken Link
https://lkml.org/lkml/2017/4/3/724	Broken Link

URL	Date	SRC
https://www.exploit-db.com/exploits/42136	2024-08-05
https://github.com/homjxi0e/CVE-2017-7472	2017-06-08

URL	Date	SRC
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c9f838d104fed6f2f61d68164712e3204bf5271b	2023-02-12
http://openwall.com/lists/oss-security/2017/05/11/1	2023-02-12
https://bugzilla.novell.com/show_bug.cgi?id=1034862	2023-02-12
https://bugzilla.redhat.com/show_bug.cgi?id=1442086	2018-01-25
https://github.com/torvalds/linux/commit/c9f838d104fed6f2f61d68164712e3204bf5271b	2023-02-12

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html	2023-02-12
https://access.redhat.com/errata/RHSA-2018:0151	2023-02-12
https://access.redhat.com/errata/RHSA-2018:0152	2023-02-12
https://access.redhat.com/errata/RHSA-2018:0181	2023-02-12
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.13	2023-02-12
https://access.redhat.com/security/cve/CVE-2017-7472	2018-01-25

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"				<= 4.10.12 Search vendor "Linux" for product "Linux Kernel" and version " <= 4.10.12"		-		Affected