CVE-2017-1000373
moderate-risk
Published 2017-06-19
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.
Do I need to act?
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18.8% chance of exploitation in next 30 days
EPSS score — higher than 81% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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1 public exploit available
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10
Medium
NETWORK
/ LOW complexity
Affected Products (1)
Affected Vendors
References (18)
Third Party Advisory
http://www.securityfocus.com/bid/99177
Third Party Advisory
https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt
Third Party Advisory
http://www.securityfocus.com/bid/99177
Third Party Advisory
https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt
49
/ 100
moderate-risk
Severity
24/34 · High
Exploitability
20/34 · Moderate
Exposure
5/34 · Minimal