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Bash: Arbitrary code execution

Description

### Background Bash is the standard GNU Bourne Again SHell. ### Description A vulnerability was found in the way Bash expands $HOSTNAME. Injecting malicious code into $HOSTNAME could cause it to run each time Bash expands \h in the prompt string. ### Impact A remote attacker controlling the system’s hostname (i.e. via DHCP) could possibly execute arbitrary code with the privileges of the process, or cause a Denial of Service condition. ### Workaround There is no known workaround at this time. ### Resolution All Bash users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-shells/bash-4.3_p46-r1"


Affected Package


OS OS Version Package Name Package Version
Gentoo any app-shells/bash 4.3_p46-r1

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