CVE-2018-14619

kernel: crash (possible privesc) in kernel crypto api.

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A flaw was found in the crypto subsystem of the Linux kernel before version kernel-4.15-rc4. The "null skcipher" was being dropped when each af_alg_ctx was freed instead of when the aead_tfm was freed. This can cause the null skcipher to be freed while it is still in use leading to a local user being able to crash the system or possibly escalate privileges.

Se ha encontrado un error en el subsistema crypto del kernel de Linux en versiones anteriores a kernel-4.15-rc4. Se dejó "null skcipher" cuando se liberó cada af_alg_ctx en lugar de cuando se liberó aead_tfm. Esto puede provocar la liberación del skcipher null mientras sigue en uso, lo que conduce a que un usuario local sea capaz de provocar el cierre inesperado del sistema o un posible escalado de privilegios.

A flaw was found in the crypto subsystem that allowed an attacker to crash the system or possibly escalate privileges with a specially crafted program.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-07-27 CVE Reserved
2018-08-30 CVE Published
2023-03-08 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-416: Use After Free

CAPEC

References (7)

URL	Tag	Source
http://www.securityfocus.com/bid/105200	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14619	Issue Tracking
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0013	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b32a7dc8aef1882fbf983eb354837488cc9d54dc	2023-02-24

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2018:2948	2023-02-24
https://access.redhat.com/security/cve/CVE-2018-14619	2018-10-30
https://bugzilla.redhat.com/show_bug.cgi?id=1622004	2018-10-30

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"				>= 4.14 < 4.14.8 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14 < 4.14.8"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				4.15 Search vendor "Linux" for product "Linux Kernel" and version "4.15"		rc1		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				4.15 Search vendor "Linux" for product "Linux Kernel" and version "4.15"		rc2		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				4.15 Search vendor "Linux" for product "Linux Kernel" and version "4.15"		rc3		Affected