CVE Vulnerability

CVE-2018-1095

The ext4_xattr_check_entries function in fs/ext4/xattr.c in the Linux kernel through 4.15.15 does not properly validate xattr sizes, which causes misinterpretation of a size as an error code, and consequently allows attackers to cause a denial of service (get_acl NULL pointer dereference and system crash) via a crafted ext4 image.

7.1 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 6.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

Scope

5.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=ce3fd194fcc6fbdc00ce095a852f22df97baa401 Patch
https://bugzilla.redhat.com/show_bug.cgi?id=1560793 Issue Tracking
https://bugzilla.kernel.org/show_bug.cgi?id=199185 Exploit Issue Tracking
http://openwall.com/lists/oss-security/2018/03/29/1 Mailing List
https://usn.ubuntu.com/3695-2/
https://usn.ubuntu.com/3695-1/
https://access.redhat.com/errata/RHSA-2018:2948
Configurations

Configuration 1

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Information

Published : 2018-04-02 03:29

Updated : 2023-02-13 04:53

NVD link : CVE-2018-1095

Mitre link : CVE-2018-1095

Products Affected
No products.
CWE
CWE-476