SB201712006 - Security restrictions bypass in OpenBSD
Published: December 20, 2017
Security Bulletin ID
SB201712006
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Security restrictions bypass (CVE-ID: N/A)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
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.