Type Confusion in Google Android - CVE-2018-9568

Vulnerability identifier: #VU21092

CSH Severity: High

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-2018-9568

CWE-ID: CWE-843

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to a type confusion error in the sk_clone_lock() function in sock.c. A local user can run a specially crafted application to trigger memory corruption and execute arbitrary code on the target system with elevated privileges.

Google Android
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for Real Time
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux Server - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Opensuse

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
Data Computing Appliance (DCA)
Red Hat Virtualization Host

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

kernel (Red Hat package) - addressed in versions 2.6.32-431.97.1.el6, 2.6.32-504.82.1.el6, 2.6.32-754.22.1.el6, 3.10.0-327.83.1.el7, 3.10.0-514.71.1.el7, 3.10.0-693.58.1.el7, 3.10.0-862.44.2.el7, 3.10.0-957.10.1.el7
Data Computing Appliance (DCA) - update to 3.5.5.0
kernel-rt (Red Hat package) - addressed in versions 3.10.0-693.58.1.rt56.652.el6rt, 3.10.0-957.10.1.rt56.921.el7

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/core/sock.c?id=9d538fa...
• https://source.android.com/security/bulletin/2018-12-01

• Red Hat update for kernel
• Red Hat update for kernel-rt
• Red Hat update for kernel
• Red Hat 7.5 update for kernel
• Red Hat update for kernel
• Red Hat update for kernel
• Red Hat update for kernel
• Red Hat update for kernel
• OpenSUSE Linux update for the Linux Kernel
• Multiple vulnerabilities in Dell EMC Data Computing Appliance (DCA)
• Red Hat Enterprise Linux 7 update for kernel-rt
• Red Hat Enterprise Linux 7 update for kernel