CVE-2017-1000378

The NetBSD 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 NetBSD 7.1 and possibly earlier versions.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

V3 Legend

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt	Third Party Advisory
http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/stdlib/qsort.c?rev=1.23&content-type=text/x-cvsweb-markup	Third Party Advisory
http://www.securityfocus.com/bid/99255	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

cpe:2.3:o:netbsd:netbsd:*:*:*:*:*:*:*:*

Information

Published : 2017-06-19 09:29

Updated : 2019-10-02 17:03

NVD link : CVE-2017-1000378

Mitre link : CVE-2017-1000378

JSON object : View

CWE

CWE-400

Uncontrolled Resource Consumption

Products Affected

netbsd

netbsd

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9.8 /10