Out-of-bounds write in Linux kernel - CVE-2017-18551

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Main Vulnerability Database Vulnerabilities #VU20858

Out-of-bounds write in Linux kernel - CVE-2017-18551

Published: September 4, 2019


Vulnerability identifier: #VU20858
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-2017-18551
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a boundary error in the "drivers/i2c/i2c-core-smbus.c" file when processing untrusted input. A local authenticated user access the system and execute an application that submits malicious input to the affected software, trigger an out-of-bounds write condition in the "i2c_smbus_xfer_emulated" function and execute arbitrary code or cause a DoS condition on the target system.




Affected software

Linux kernel
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
Red Hat Enterprise Linux for Real Time for NFV
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Virtualization Host - Extended Update Support 4.2 for RHEL
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
BIG-IP
F5 iWorkflow
BIG-IQ Centralized Management
Enterprise Manager
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)
Traffix SDC
BIG-IP FPS
BIG-IP AFM
BIG-IP GTM
BIG-IP Analytics
BIG-IP LTM
BIG-IP APM
BIG-IP PEM
BIG-IP ASM
BIG-IP DNS
BIG-IP WebAccelerator
BIG-IP Link Controller
BIG-IP Edge Gateway
BIG-IP AAM

How to mitigate CVE-2017-18551

Install updates from vendor's website.

Linux kernel - update to 4.14.15
BIG-IP - addressed in versions 11.6.5.3, 12.1.5.3, 13.1.3.6, 14.1.3.1, 15.1.3
kernel (Red Hat package) - addressed in versions 3.10.0-693.81.1.el7, 3.10.0-957.65.1.el7, 3.10.0-1062.40.1.el7, 3.10.0-1160.el7
BIG-IQ Centralized Management - update to 8.4.1
BIG-IP FPS - addressed in versions 11.6.5.3, 12.1.5.3, 13.1.3.6, 14.1.3.1, 15.1.3
BIG-IP AFM - addressed in versions 11.6.5.3, 12.1.5.3, 13.1.3.6, 14.1.3.1, 15.1.3
BIG-IP GTM - addressed in versions 11.6.5.3, 12.1.5.3, 13.1.3.6, 14.1.3.1, 15.1.3
BIG-IP Analytics - addressed in versions 11.6.5.3, 12.1.5.3, 13.1.3.6, 14.1.3.1, 15.1.3
BIG-IP DNS - addressed in versions 11.6.5.3, 12.1.5.3, 13.1.3.6, 14.1.3.1, 15.1.3
BIG-IP LTM - addressed in versions 11.6.5.3, 12.1.5.3, 13.1.3.6, 14.1.3.1, 15.1.3
BIG-IP WebAccelerator - addressed in versions 11.6.5.3, 12.1.5.3, 13.1.3.6, 14.1.3.1, 15.1.3
BIG-IP Link Controller - addressed in versions 11.6.5.3, 12.1.5.3, 13.1.3.6, 14.1.3.1, 15.1.3
BIG-IP APM - addressed in versions 11.6.5.3, 12.1.5.3, 13.1.3.6 2, 14.1.3.1, 15.1.3
BIG-IP Edge Gateway - addressed in versions 11.6.5.3, 12.1.5.3, 13.1.3.6, 14.1.3.1, 15.1.3
BIG-IP PEM - addressed in versions 11.6.5.3, 12.1.5.3, 13.1.3.6, 14.1.3.1, 15.1.3
BIG-IP ASM - addressed in versions 11.6.5.3, 12.1.5.3, 13.1.3.6, 14.1.3.1, 15.1.3
BIG-IP AAM - addressed in versions 11.6.5.3, 12.1.5.3, 13.1.3.6, 14.1.3.1, 15.1.3
kernel-rt (Red Hat package) - update to 3.10.0-1160.rt56.1131.el7
kernel-alt (Red Hat package) - update to 4.14.0-115.21.2.el7a

External References

Related Security Bulletins