Integer overflow in Linux kernel - CVE-2018-14634

Vulnerability identifier: #VU15168

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-2018-14634

CWE-ID: CWE-190

Exploitation vector: Local access

Exploit availability: The vulnerability is being exploited in the wild

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to integer overflow in create_elf_tables() function when processing SUID binaries. A local unprivileged user can use this vulnerability to execute execute arbitrary code on the system with elevated privileges.

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

MRG Realtime
kernel (Red Hat package)
kernel-rt (Red Hat package)
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Virtualization Host
Data Computing Appliance (DCA)

Install updates from vendor's website.

kernel (Red Hat package) - addressed in versions 2.6.32-358.94.1.el6, 2.6.32-431.93.2.el6, 2.6.32-504.76.2.el6, 2.6.32-573.65.2.el6, 2.6.32-754.6.3.el6, 3.10.0-327.76.1.el7, 3.10.0-693.43.1.el7, 3.10.0-862.14.4.el7
kernel-rt (Red Hat package) - addressed in versions 3.10.0-693.43.1.rt56.630.el6rt, 3.10.0-862.14.4.rt56.821.el7
Data Computing Appliance (DCA) - update to 3.5.2.0

• Exploit #6120 - Linux Kernel 2.6.x / 3.10.x / 4.14.x (RedHat / Debian / CentOS) (x64) - 'Mutagen Astronomy' Local Privilege Escalation (June 17, 2021)
• Exploit #211 - cve-2018-14634 (proof-of-concept (PoC) for linux dists based on Debian, CentOS and RedHat - exploit 1) (March 18, 2020)

• https://access.redhat.com/errata/RHSA-2018:2748
• https://access.redhat.com/errata/RHSA-2018:2763
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14634
• https://usn.ubuntu.com/3775-1/
• https://usn.ubuntu.com/3775-2/
• https://usn.ubuntu.com/3779-1/
• https://www.exploit-db.com/exploits/45516/
• https://www.openwall.com/lists/oss-security/2018/09/25/4

• Red Hat update for kernel
• Red Hat update for kernel
• Red Hat update for kernel
• Red Hat update for kernel
• Red Hat update for kernel
• Red Hat update for kernel
• Red Hat update for kernel-rt
• Red Hat update for kernel
• Multiple vulnerabilities in Dell EMC Data Computing Appliance (DCA)
• Red Hat Enterprise Linux 6.6 Advanced Update Support and Red Hat Enterprise Linux 6.6 Telco Extended Update Support update for kernel
• Red Hat Enterprise Linux 6.5 Advanced Update Support update for kernel