Information disclosure in OpenBSD - #VU13552
Published: July 4, 2018
Vulnerability identifier: #VU13552
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The weakness exists due to Intel CPUs speculatively access FPU registers even when the FPU is disabled. A remote attacker can use the lazy-save approach and discover data (including AES keys) from previous contexts.
Affected software
OpenBSD
Remediation
Update to version 6.3.
OpenBSD - update to 6.3