National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-12192 Detail

Current Description

The keyctl_read_key function in security/keys/keyctl.c in the Key Management subcomponent in the Linux kernel before 4.13.5 does not properly consider that a key may be possessed but negatively instantiated, which allows local users to cause a denial of service (OOPS and system crash) via a crafted KEYCTL_READ operation.

Source:  MITRE      Last Modified:  10/28/2017      View Analysis Description

Quick Info

CVE Dictionary Entry:
CVE-2017-12192
Original release date:
10/11/2017
Last revised:
01/26/2018
Source:
US-CERT/NIST

Impact

CVSS Severity (version 3.0):
CVSS v3 Base Score:
5.5 Medium
Vector:
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H (legend)
Impact Score:
3.6
Exploitability Score:
1.8
CVSS Version 3 Metrics:
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High
CVSS Severity (version 2.0):
CVSS v2 Base Score:
4.9 MEDIUM
Vector:
(AV:L/AC:L/Au:N/C:N/I:N/A:C) (legend)
Impact Subscore:
6.9
Exploitability Subscore:
3.9
CVSS Version 2 Metrics:
Access Vector:
Locally exploitable
Access Complexity:
Low
Authentication:
Not required to exploit
Impact Type:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=37863c43b2c6464f252862bf2e9768264e961678 Patch; Vendor Advisory External Source CONFIRM http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=37863c43b2c6464f252862bf2e9768264e961678
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5 Vendor Advisory External Source CONFIRM http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5
https://access.redhat.com/errata/RHSA-2018:0151 External Source REDHAT RHSA-2018:0151
https://bugzilla.redhat.com/show_bug.cgi?id=1493435 Issue Tracking; Third Party Advisory External Source CONFIRM https://bugzilla.redhat.com/show_bug.cgi?id=1493435
https://github.com/torvalds/linux/commit/37863c43b2c6464f252862bf2e9768264e961678 Patch; Vendor Advisory External Source CONFIRM https://github.com/torvalds/linux/commit/37863c43b2c6464f252862bf2e9768264e961678
https://lkml.org/lkml/2017/9/18/764 Mailing List; Third Party Advisory External Source MISC https://lkml.org/lkml/2017/9/18/764

Technical Details

Vulnerability Type (View All)

  • NULL Pointer Dereference (CWE-476)

Change History 3 change records found - show changes