National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-1000373 Detail

Current Description

The OpenBSD qsort() function is recursive, and not randomized, an attacker can construct a pathological input array of N elements that causes qsort() to deterministically recurse N/4 times. This allows attackers to consume arbitrary amounts of stack memory and manipulate stack memory to assist in arbitrary code execution attacks. This affects OpenBSD 6.1 and possibly earlier versions.

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

Quick Info

CVE Dictionary Entry:
CVE-2017-1000373
Original release date:
06/19/2017
Last revised:
10/23/2017
Source:
US-CERT/NIST

Impact

CVSS Severity (version 3.0):
CVSS v3 Base Score:
6.5 Medium
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L (legend)
Impact Score:
2.5
Exploitability Score:
3.9
CVSS Version 3 Metrics:
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
Low
Availability (A):
Low
CVSS Severity (version 2.0):
CVSS v2 Base Score:
6.4 MEDIUM
Vector:
(AV:N/AC:L/Au:N/C:N/I:P/A:P) (legend)
Impact Subscore:
4.9
Exploitability Subscore:
10.0
CVSS Version 2 Metrics:
Access Vector:
Network exploitable
Access Complexity:
Low
Authentication:
Not required to exploit
Impact Type:
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/99177 Third Party Advisory; VDB Entry External Source BID 99177
http://www.securitytracker.com/id/1039427 External Source SECTRACK 1039427
https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdlib/qsort.c?rev=1.15&content-type=text/x-cvsweb-markup Mitigation; Third Party Advisory External Source MISC https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdlib/qsort.c?rev=1.15&content-type=text/x-cvsweb-markup
https://support.apple.com/HT208112 External Source CONFIRM https://support.apple.com/HT208112
https://support.apple.com/HT208113 External Source CONFIRM https://support.apple.com/HT208113
https://support.apple.com/HT208115 External Source CONFIRM https://support.apple.com/HT208115
https://support.apple.com/HT208144 External Source CONFIRM https://support.apple.com/HT208144
https://www.exploit-db.com/exploits/42271/ External Source EXPLOIT-DB 42271
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)

  • Uncontrolled Resource Consumption ('Resource Exhaustion') (CWE-400)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:*    versions up to (including) 6.1

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

Change History 5 change records found - show changes