CVE-2017-8797

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

02/07/2017

Last modified:

20/04/2025

Description

The NFSv4 server in the Linux kernel before 4.11.3 does not properly validate the layout type when processing the NFSv4 pNFS GETDEVICEINFO or LAYOUTGET operand in a UDP packet from a remote attacker. This type value is uninitialized upon encountering certain error conditions. This value is used as an array index for dereferencing, which leads to an OOPS and eventually a DoS of knfsd and a soft-lockup of the whole system.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

7.50

Severity 3.x

HIGH

Vector 2.0

AV:N/AC:L/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete

Base Score 2.0

7.80

Severity 2.0

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	4.0 (including)	4.1.40 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.2 (including)	4.4.70 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.5 (including)	4.9.30 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.11 (including)	4.11.3 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2017-8797

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools