Information disclosure in Intel CPU - CVE-2018-3693

Vulnerability identifier: #VU13850

CSH Severity: Low

CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-3693

CWE-ID: CWE-119

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local attacker to obtain potentially sensitive information.

The vulnerability exists in the design of most modern CPUs using speculative execution and branch prediction due to improper speculative execution of instructions. A local attacker can bypass bounds checks, trigger buffer overflow, perform arbitrary speculative execution and a side-channel attack to access sensitive memory information.

Intel CPU
Fujitsu M12-1
Fujitsu M12-2
Fujitsu M12-2S

kernel (Red Hat package)
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
kernel-rt (Red Hat package)
kernel-alt (Red Hat package)
Red Hat Virtualization Host
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for Power 9
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM System z (Structure A)
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux Server - Extended Update Support
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux Server - TUS

Fujitsu M12-1 - update to XCP3090
Fujitsu M12-2 - update to XCP3090
Fujitsu M12-2S - update to XCP3090
kernel (Red Hat package) - addressed in versions 2.6.32-754.3.5.el6, 3.10.0-693.55.1.el7, 3.10.0-862.11.6.el7
kernel-rt (Red Hat package) - update to 3.10.0-862.11.6.rt56.819.el7
kernel-alt (Red Hat package) - update to 4.14.0-115.17.1.el7a

• https://01.org/security/advisories/intel-oss-10002

• Information disclosure in Intel CPU
• Red Hat update for kernel
• Multiple vulnerabilities in Fujitsu M12 servers
• Red Hat Enterprise Linux 7 update for kernel
• Red Hat Enterprise Linux 6 update for kernel
• Red Hat Enterprise Linux 7 update for kernel-rt
• Red Hat Enterprise Linux 7 update for kernel-alt