Security restrictions bypass in OpenBSD

Published: 2017-12-20 00:00:00
Severity Low
Patch available YES
Number of vulnerabilities 1
CVE ID N/A
CVSSv3 4.6 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CWE ID CWE-284
Exploitation vector Local
Public exploit Not available
Vulnerable software OpenBSD
Vulnerable software versions OpenBSD 6.2
Vendor URL OpenBSD

Security Advisory

1) Security restrictions bypass

Description

The vulnerability allows a local attacker to bypass security restrictions on the target system.

The weakness exists due to insufficient security checks in the fktrace(2) processing tracing system call. A local attacker can make a specially crafted system call and bypass intended security restrictions.

Remediation

Install update from vendor's website.

External links

https://ftp.openbsd.org/pub/OpenBSD/patches/6.2/common/002_fktrace.patch.sig

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