Information disclosure in Linux kernel - CVE-2014-8134
Published: April 1, 2016 / Updated: April 17, 2018
Vulnerability identifier: #VU3909
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2014-8134
CWE-ID: CWE-200
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows an adjacent attacker to obtain potentially sensitive information on the target system.
The weakness exists in the paravirt_ops_setup function in arch/x86/kernel/kvm.c due to use of an improper paravirt_enabled setting for KVM guest kernels. An adjacent attacker can submit a specially crafted application that reads a 16-bit value, bypass the ASLR protection mechanism and gain access to potentially sensitive information.
The weakness exists in the paravirt_ops_setup function in arch/x86/kernel/kvm.c due to use of an improper paravirt_enabled setting for KVM guest kernels. An adjacent attacker can submit a specially crafted application that reads a 16-bit value, bypass the ASLR protection mechanism and gain access to potentially sensitive information.
How to mitigate CVE-2014-8134
Update to version 3.19.