National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-17862 Detail

Current Description

kernel/bpf/verifier.c in the Linux kernel through 4.14.8 ignores unreachable code, even though it would still be processed by JIT compilers. This behavior, also considered an improper branch-pruning logic issue, could possibly be used by local users for denial of service.

Source:  MITRE      Last Modified:  12/23/2017      View Analysis Description

Quick Info

CVE Dictionary Entry:
CVE-2017-17862
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:
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=c131187db2d3fa2f8bf32fdf4e9a4ef805168467 Vendor Advisory External Source MISC http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c131187db2d3fa2f8bf32fdf4e9a4ef805168467
http://www.securityfocus.com/bid/102325 Third Party Advisory; VDB Entry External Source BID 102325
http://www.securitytracker.com/id/1040057 Third Party Advisory; VDB Entry External Source SECTRACK 1040057
https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/patches/bugfix/all/bpf-fix-branch-pruning-logic.patch?h=stretch-security Third Party Advisory External Source MISC https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/patches/bugfix/all/bpf-fix-branch-pruning-logic.patch?h=stretch-security
https://github.com/torvalds/linux/commit/c131187db2d3fa2f8bf32fdf4e9a4ef805168467 Third Party Advisory External Source MISC https://github.com/torvalds/linux/commit/c131187db2d3fa2f8bf32fdf4e9a4ef805168467
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
https://www.spinics.net/lists/stable/msg206984.html Patch; Third Party Advisory External Source MISC https://www.spinics.net/lists/stable/msg206984.html

Technical Details

Vulnerability Type (View All)

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