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Critical Command Injection Flaw Patched in Red Hat Linux

A critical vulnerability in the DHCP client in Red Hat Enterprise Linux could allow an attacker to execute arbitrary commands on impacted systems.

Tracked as CVE-2018-1111, the security flaw was reported by Felix Wilhelm from Google's Security Team. The bug was discovered in the NetworkManager integration script included in the DHCP client packages.

The vulnerability features a CVSS3 Base Score of 7.5 and can be exploited without special privileges. However, an attacker targeting the bug could execute arbitrary commands with root privileges on vulnerable Red Hat systems.

Through the DHCP protocol, a central server can be used to configure network related information in hosts. When connecting to a network, a host could issue DHCP requests to fetch network configuration parameters such as IP address, default router IP, DNS servers, and the like.

The DHCP client package in Red Hat includes a script for the NetworkManager component. The script is executed each time...(continued)

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