Design/Logic Flaw

2018-06-1212:29:00

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www.prio-n.com

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

7.3 High

AI Score

Confidence

High

6.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

0.005 Low

EPSS

Percentile

74.8%

JSON

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.

CPENameOperatorVersion
ubuntu_linuxeq16.04
ubuntu_linuxeq14.04
ubuntu_linuxeq18.04
linux_kernelge4.10
linux_kernellt4.14.62
linux_kernelge3.19
linux_kernellt4.4.147
linux_kernelge3.17
linux_kernellt3.18.118
linux_kernelge2.6.12

Name	Operator	Version
ubuntu_linux	eq	16.04
ubuntu_linux	eq	14.04
ubuntu_linux	eq	18.04
linux_kernel	ge	4.10
linux_kernel	lt	4.14.62
linux_kernel	ge	3.19
linux_kernel	lt	4.4.147
linux_kernel	ge	3.17
linux_kernel	lt	3.18.118
linux_kernel	ge	2.6.12