#VU8131 Out-of-bounds read in Linux kernel - CVE-2017-11600
Published: September 7, 2017 / Updated: April 30, 2018
Vulnerability identifier: #VU8131
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-11600
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local attacker to cause DoS condition on the target system.
The weakness exists in net/xfrm/xfrm_policy.c due to it does not ensure that the dir value of xfrm_userpolicy_id is XFRM_POLICY_MAX or less when CONFIG_XFRM_MIGRATE is enabled. A local attacker can submit a specially crafted XFRM_MSG_MIGRATE xfrm Netlink message and cause the service to crash.
The weakness exists in net/xfrm/xfrm_policy.c due to it does not ensure that the dir value of xfrm_userpolicy_id is XFRM_POLICY_MAX or less when CONFIG_XFRM_MIGRATE is enabled. A local attacker can submit a specially crafted XFRM_MSG_MIGRATE xfrm Netlink message and cause the service to crash.
Remediation
Update to version 4.12.4.