Linux Kernel CVE-2019-10220 Directory Traversal Vulnerability

Description

Linux Kernel is prone to a directory-traversal vulnerability. An attacker can exploit this issue using directory-traversal characters (‘…/’) to access, write or execute arbitrary files. Linux kernel version 4.9.0 is vulnerable.

Technologies Affected

• Linux kernel 4.9.0

Recommendations

Block external access at the network boundary, unless external parties require service.
Filter access to the affected computer at the network boundary if global access isn’t needed. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity. This includes but is not limited to requests that include NOP sleds and unexplained incoming and outgoing traffic

Run all software as a nonprivileged user with minimal access rights.
To limit the impact of latent vulnerabilities, configure database servers and other applications to run as a nonadministrative user with minimal access rights.

Updates are available. Please see the references or vendor advisory for more information.