PT-2017-1724 · Openbsd · Openbsd Kernel

Published 2017-03-07 · Updated 2017-03-08 · CVE-2016-6244

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions OpenBSD kernel version 5.9

Description The issue exists due to insufficient input validation in the sys thrsigdiv function in kern/kern sig.c. Exploitation of this issue may allow a remote attacker to cause a denial of service via a negative ts.tv sec value.

Recommendations For OpenBSD kernel version 5.9, consider applying a patch or update that fixes the insufficient input validation in the sys thrsigdiv function to prevent denial of service attacks. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2017-00877

CVE-2016-6244

Affected Products

Openbsd Kernel

References · 5

• 🔥 http://openwall.com/lists/oss-security/2016/07/17/7 · Exploit
• https://bdu.fstec.ru/vul/2017-00877 · Security Note
• https://osv.dev/vulnerability/CVE-2016-6244 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-6244 · Security Note
• http://securityfocus.com/bid/91805 · Note