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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
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


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

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 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer cwe source acceptance level NIST  

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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
Source:
MITRE