Privilege escalation in Linux kernel - CVE-2018-1068

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Main Vulnerability Database Vulnerabilities #VU11145

Privilege escalation in Linux kernel - CVE-2018-1068

Published: March 19, 2018


Vulnerability identifier: #VU11145
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-1068
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists due to an error in the implementation of 32 bit syscall interface. A local attacker can gain root privileges.

Affected software

Linux kernel
Amazon Linux AMI
Debian Linux
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power 9
Red Hat Enterprise Linux for IBM System z (Structure A)
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux Server - AUS
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 for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
SUSE Linux
Fedora

MRG Realtime
kernel (Red Hat package)
kernel-rt (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-alt (Red Hat package)
kernel

How to mitigate CVE-2018-1068

Install update from vendor's website.

kernel (Red Hat package) - addressed in versions 3.10.0-514.71.1.el7, 3.10.0-693.47.2.el7
kernel-rt (Red Hat package) - addressed in versions 3.10.0-693.47.2.rt56.641.el6rt, 3.10.0-862.2.3.rt56.806.el7
kernel-alt (Red Hat package) - update to 4.14.0-115.el7a
kernel - addressed in versions 4.15.10-200.fc26, 4.15.10-300.fc27

External References

Related Security Bulletins