CVE-2017-1000378

Description

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 3.98% Top 15%
Third-Party Advisory netbsd.org Third-Party Advisory securityfocus.com Third-Party Advisory qualys.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/99255 third party advisory vdb entry
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

Frequently Asked Questions

What is the severity of CVE-2017-1000378?
CVE-2017-1000378 has been scored as a critical severity vulnerability.
How to fix CVE-2017-1000378?
To fix CVE-2017-1000378, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-1000378 being actively exploited in the wild?
It is possible that CVE-2017-1000378 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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