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

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.8 HIGH
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 1.8


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 v2.0 Severity and Metrics:

Base Score: 7.2 HIGH
Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.9


Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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

Technical Details

Vulnerability Type (View All)

Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-1000253
NVD Published Date:
10/04/2017
NVD Last Modified:
12/08/2017