National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-17864 Detail

Current Description

kernel/bpf/verifier.c in the Linux kernel through 4.14.8 mishandles states_equal comparisons between the pointer data type and the UNKNOWN_VALUE data type, which allows local users to obtain potentially sensitive address information, aka a "pointer leak."

Source:  MITRE      Last Modified:  12/25/2017      View Analysis Description

Quick Info

CVE Dictionary Entry:
CVE-2017-17864
Original release date:
12/27/2017
Last revised:
01/12/2018
Source:
US-CERT/NIST

Impact

CVSS Severity (version 3.0):
CVSS v3 Base Score:
3.3 Low
Vector:
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N (legend)
Impact Score:
1.4
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):
Low
Integrity (I):
None
Availability (A):
None
CVSS Severity (version 2.0):
CVSS v2 Base Score:
2.1 LOW
Vector:
(AV:L/AC:L/Au:N/C:P/I:N/A:N) (legend)
Impact Subscore:
2.9
Exploitability Subscore:
3.9
CVSS Version 2 Metrics:
Access Vector:
Locally exploitable
Access Complexity:
Low
Authentication:
Not required to exploit
Impact Type:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://www.securityfocus.com/bid/102320 Third Party Advisory; VDB Entry External Source BID 102320
http://www.securitytracker.com/id/1040059 Third Party Advisory; VDB Entry External Source SECTRACK 1040059
https://anonscm.debian.org/cgit/kernel/linux.git/commit/?h=stretch-security&id=ad775f6ff7eebb93eedc2f592bc974260e7757b0 Third Party Advisory External Source MISC https://anonscm.debian.org/cgit/kernel/linux.git/commit/?h=stretch-security&id=ad775f6ff7eebb93eedc2f592bc974260e7757b0
https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/patches/bugfix/all/bpf-verifier-fix-states_equal-comparison-of-pointer-and-unknown.patch?h=stretch-security Third Party Advisory External Source MISC https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/patches/bugfix/all/bpf-verifier-fix-states_equal-comparison-of-pointer-and-unknown.patch?h=stretch-security
https://usn.ubuntu.com/usn/usn-3523-2/ External Source UBUNTU USN-3523-2
https://www.debian.org/security/2017/dsa-4073 Third Party Advisory External Source DEBIAN DSA-4073

Technical Details

Vulnerability Type (View All)

  • Information Leak / Disclosure (CWE-200)

Vulnerable software and versions Switch to CPE 2.3

Configuration 1
OR
cpe:/o:linux:linux_kernel    versions up to (including) 4.14.8
Configuration 2
OR
cpe:/o:debian:debian_linux:9.0

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History 4 change records found - show changes