Live › vulnerability › CVE-2014-6271
Go to dashboardGNU Bash through 4.3 runs trailing code after function definitions in environment variable values, the Shellshock flaw. A remote attacker can execute commands on a system whose Bash reads attacker-controlled environment variables.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| GNU Bourne-Again Shell (Bash) | vendor | – | – |
env x="() { :;}; echo VULNERABLE" bash -c "echo test" and see if VULNERABLE printsUpdate Bash to a patched release from your OS vendor and confirm the test above no longer prints VULNERABLE.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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.
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