National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-1000371 Detail

Current Description

The offset2lib patch as used by the Linux Kernel contains a vulnerability, if RLIMIT_STACK is set to RLIM_INFINITY and 1 Gigabyte of memory is allocated (the maximum under the 1/4 restriction) then the stack will be grown down to 0x80000000, and as the PIE binary is mapped above 0x80000000 the minimum distance between the end of the PIE binary's read-write segment and the start of the stack becomes small enough that the stack guard page can be jumped over by an attacker. This affects Linux Kernel version 4.11.5. This is a different issue than CVE-2017-1000370 and CVE-2017-1000365. This issue appears to be limited to i386 based systems.

Source:  MITRE      Last Modified:  06/19/2017      View Analysis Description

Quick Info

CVE Dictionary Entry:
CVE-2017-1000371
Original release date:
06/19/2017
Last revised:
11/05/2017
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.debian.org/security/2017/dsa-3981 External Source DEBIAN DSA-3981
http://www.securityfocus.com/bid/99131 Third Party Advisory; VDB Entry External Source BID 99131
https://access.redhat.com/security/cve/CVE-2017-1000371 Third Party Advisory; VDB Entry External Source CONFIRM https://access.redhat.com/security/cve/CVE-2017-1000371
https://www.exploit-db.com/exploits/42273/ External Source EXPLOIT-DB 42273
https://www.exploit-db.com/exploits/42276/ External Source EXPLOIT-DB 42276
https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt Third Party Advisory External Source MISC https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt

Technical Details

Vulnerability Type (View All)

  • Permissions, Privileges, and Access Control (CWE-264)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:o:linux:linux_kernel:4.11.5:*:*:*:*:*:*:*

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

Change History 4 change records found - show changes