SB2023111057 - Missing speculative execution protections in FreeBSD
Published: November 10, 2023
Security Bulletin ID
SB2023111057
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Physical access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Missing Protection Mechanism for Alternate Hardware Interface (CVE-ID: CVE-2023-5370)
CWE-ID: CWE-1299 - Missing Protection Mechanism for Alternate Hardware Interface
CVSSv4: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to compromise the affected system.
The vulnerability exists due to a missing check for CPU 0 on AArch64 hardware when deciding whether to use the Secure Monitor Call Calling Convention (SMCCC) mechanism on a given CPU. An attacker with physical access to the system can compromise the affected system.
Remediation
Install update from vendor's website.