#VU9770 Security restrictions bypass in Linux kernel - CVE-2017-17450
Published: December 26, 2017
Vulnerability identifier: #VU9770
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2017-17450
CWE-ID: CWE-264
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 bypass security restrictions on the target system.
The weakness exists due to net/netfilter/xt_osf.c in the Linux kernel through does not require the CAP_NET_ADMIN capability for add_callback and remove_callback operations. A local attacker can bypass intended access restrictions because the xt_osf_fingers data structure is shared across all net namespaces.
The weakness exists due to net/netfilter/xt_osf.c in the Linux kernel through does not require the CAP_NET_ADMIN capability for add_callback and remove_callback operations. A local attacker can bypass intended access restrictions because the xt_osf_fingers data structure is shared across all net namespaces.
Remediation
Update to version 4.14.4.