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CRITICAL KEV

bash: specially-crafted environment variables can be used to inject shell commands

Published Sep 24, 2014 ·Due Jul 28, 2022

Description

GNU Bash through 4.3 processes trailing strings after function definitions in the values of environment variables, which allows remote attackers to execute arbitrary code via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi and mod_cgid modules in the Apache HTTP Server, scripts executed by unspecified DHCP clients, and other situations in which setting the environment occurs across a privilege boundary from Bash execution, aka "ShellShock." NOTE: the original fix for this issue was incorrect; CVE-2014-7169 has been assigned to cover the vulnerability that is still present after the incorrect fix.

Affected products

Remediation

No remediation recorded yet.

Metrics

References (175)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner debian
Published Sep 24, 2014
Updated Oct 22, 2025
Reserved Sep 9, 2014
CISA Vulnrichment
Updated Feb 7, 2025
NVD
Status Analyzed
Modified Jun 17, 2026
Red Hat
Severity Critical
Public date Sep 24, 2014