CVE-2018-12233

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In the ea_get function in fs/jfs/xattr.c in the Linux kernel through 4.17.1, a memory corruption bug in JFS can be triggered by calling setxattr twice with two different extended attribute names on the same file. This vulnerability can be triggered by an unprivileged user with the ability to create files and execute programs. A kmalloc call is incorrect, leading to slab-out-of-bounds in jfs_xattr.

En la función ea_get en fs/jfs/xattr.c en el kernel de Linux hasta la versión 4.17.1, un error de corrupción de memoria en JFS puede desencadenarse mediante una llamada a setxattr dos veces con dos nombres de atributo extendidos diferentes en el mismo archivo. Esta vulnerabilidad puede ser desencadenada por un usuario no privilegiado con la capacidad de crear archivos y ejecutar programas. Una llamada kmalloc es incorrecta, lo que conduce a un slab fuera de límites en jfs_xattr.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-06-12 CVE Reserved
2018-06-12 CVE Published
2024-02-10 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (12)

URL	Tag	Source
http://www.securityfocus.com/bid/104452	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html	Mailing List
https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html	Mailing List
https://lists.debian.org/debian-lts-announce/2018/07/msg00020.html	Mailing List
https://lkml.org/lkml/2018/6/2/2	Third Party Advisory
https://marc.info/?l=linux-kernel&m=152814391530549&w=2	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://usn.ubuntu.com/3752-1	2024-02-09
https://usn.ubuntu.com/3752-2	2024-02-09
https://usn.ubuntu.com/3752-3	2024-02-09
https://usn.ubuntu.com/3753-1	2024-02-09
https://usn.ubuntu.com/3753-2	2024-02-09
https://usn.ubuntu.com/3754-1	2024-02-09

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"				>= 2.6.12 < 3.16.58 Search vendor "Linux" for product "Linux Kernel" and version " >= 2.6.12 < 3.16.58"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.17 < 3.18.118 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.17 < 3.18.118"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.19 < 4.4.147 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.19 < 4.4.147"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.5 < 4.9.119 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.5 < 4.9.119"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.10 < 4.14.62 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.10 < 4.14.62"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.15 < 4.17.14 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.15 < 4.17.14"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected