#VU7865 Privilege escalation in Linux kernel - CVE-2017-1000111
Published: August 11, 2017 / Updated: August 15, 2017
Vulnerability identifier: #VU7865
Vulnerability risk: Low
CVSSv4.0: 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/E:U/U:Clear
CVE-ID: CVE-2017-1000111
CWE-ID: CWE-362
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 gain elevated privileges on the target system.
The weakness exists in the packet_set_ring function due to improper implementation of raw packet sockets in the networking subsystem of the affected software that handles synchronization. A local attacker with CAP_NET_RAW permissions can open a raw packet socket, trigger a race condition, eventually cause use-after-free error and execute arbitrary code with root privileges.
Successful exploitation of the vulnerability may result in system compromise.
The weakness exists in the packet_set_ring function due to improper implementation of raw packet sockets in the networking subsystem of the affected software that handles synchronization. A local attacker with CAP_NET_RAW permissions can open a raw packet socket, trigger a race condition, eventually cause use-after-free error and execute arbitrary code with root privileges.
Successful exploitation of the vulnerability may result in system compromise.
Remediation
Update to the latest version.
https://github.com/GulajavaMinistudio/linux/pull/55/commits/c27927e372f0785f3303e8fad94b85945e2c97b7
https://github.com/GulajavaMinistudio/linux/pull/55/commits/c27927e372f0785f3303e8fad94b85945e2c97b7