Improper input validation in Openbsd

CVE-2016-6244

The sys_thrsigdivert function in kern/kern_sig.c in the OpenBSD kernel 5.9 allows remote attackers to cause a denial of service (panic) via a negative "ts.tv_sec" value.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.017 (75.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

  • Openbsd — versions 5.9
  • N/a — versions n/a

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
  • cve@mitre.org (mailing-list, x_refsource_MLIST, Exploit, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2016-6244?
CVE-2016-6244 is a high-severity vulnerability in Openbsd, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2017-03-07.
How severe is CVE-2016-6244?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2016-6244 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.