National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-1000253 Detail

Current Description

Linux distributions that have not patched their long-term kernels with https://git.kernel.org/linus/a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (committed on April 14, 2015). This kernel vulnerability was fixed in April 2015 by commit a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (backported to Linux 3.10.77 in May 2015), but it was not recognized as a security threat. With CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE enabled, and a normal top-down address allocation strategy, load_elf_binary() will attempt to map a PIE binary into an address range immediately below mm->mmap_base. Unfortunately, load_elf_ binary() does not take account of the need to allocate sufficient space for the entire binary which means that, while the first PT_LOAD segment is mapped below mm->mmap_base, the subsequent PT_LOAD segment(s) end up being mapped above mm->mmap_base into the are that is supposed to be the "gap" between the stack and the binary.

Source:  MITRE      Last Modified:  10/04/2017      View Analysis Description

Quick Info

CVE Dictionary Entry:
CVE-2017-1000253
Original release date:
10/04/2017
Last revised:
12/08/2017
Source:
US-CERT/NIST

Impact

CVSS Severity (version 3.0):
CVSS v3 Base Score:
7.8 High
Vector:
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (legend)
Impact Score:
5.9
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):
High
Integrity (I):
High
Availability (A):
High
CVSS Severity (version 2.0):
CVSS v2 Base Score:
7.2 HIGH
Vector:
(AV:L/AC:L/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore:
10.0
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; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://www.securityfocus.com/bid/101010 Third Party Advisory; VDB Entry External Source BID 101010
http://www.securitytracker.com/id/1039434 Third Party Advisory; VDB Entry External Source SECTRACK 1039434
https://access.redhat.com/errata/RHSA-2017:2793 External Source REDHAT RHSA-2017:2793
https://access.redhat.com/errata/RHSA-2017:2794 External Source REDHAT RHSA-2017:2794
https://access.redhat.com/errata/RHSA-2017:2795 External Source REDHAT RHSA-2017:2795
https://access.redhat.com/errata/RHSA-2017:2796 External Source REDHAT RHSA-2017:2796
https://access.redhat.com/errata/RHSA-2017:2797 External Source REDHAT RHSA-2017:2797
https://access.redhat.com/errata/RHSA-2017:2798 External Source REDHAT RHSA-2017:2798
https://access.redhat.com/errata/RHSA-2017:2799 External Source REDHAT RHSA-2017:2799
https://access.redhat.com/errata/RHSA-2017:2800 External Source REDHAT RHSA-2017:2800
https://access.redhat.com/errata/RHSA-2017:2801 External Source REDHAT RHSA-2017:2801
https://access.redhat.com/errata/RHSA-2017:2802 External Source REDHAT RHSA-2017:2802
https://www.qualys.com/2017/09/26/cve-2017-1000253/cve-2017-1000253.txt Patch; Third Party Advisory External Source MISC https://www.qualys.com/2017/09/26/cve-2017-1000253/cve-2017-1000253.txt

Technical Details

Vulnerability Type (View All)

Change History 3 change records found - show changes