CVEvulnerability

CVE-2014-6278

8.8 HIGH Known exploited Published 2014-09-30 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

GNU Bash OS Command Injection Vulnerability — GNU GNU Bash

GNU Bash contains an OS command injection vulnerability which allows remote attackers to execute arbitrary commands via a crafted environment.

Added to KEV
2025-10-02
Remediation due
2025-10-23
Ransomware use
Unknown
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: http://ftp.gnu.org/gnu/bash/bash-4.3-patches/bash43-027 ; https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/23467 ; https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140926-bash ; https://www.ibm.com/support/pages/security-bulletin-update-vulnerabilities-bash-affect-aix-toolbox-linux-applications-cve-2014-6271-cve-2014-6277-cve-2014-6278-cve-2014-7169-cve-2014-7186-and-cve-2014-7187 ; https://nvd.nist.gov/vuln/detail/CVE-2014-6278
Status
Analyzed
Published
2014-09-30
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
10.0 HIGH — AV:N/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-78

Description

GNU Bash through 4.3 bash43-026 does not properly parse function definitions in the values of environment variables, which allows remote attackers to execute arbitrary commands 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. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-6271, CVE-2014-7169, and CVE-2014-6277.

Affected configurations

• gnu bash 1.14.0 • gnu bash 1.14.1 • gnu bash 1.14.2 • gnu bash 1.14.3 • gnu bash 1.14.4 • gnu bash 1.14.5 • gnu bash 1.14.6 • gnu bash 1.14.7 • gnu bash 2.0 • gnu bash 2.01 • gnu bash 2.01.1 • gnu bash 2.02 • gnu bash 2.02.1 • gnu bash 2.03 • gnu bash 2.04 • gnu bash 2.05 • gnu bash 3.0 • gnu bash 3.0.16 • gnu bash 3.1 • gnu bash 3.2 • gnu bash 3.2.48 • gnu bash 4.0 • gnu bash 4.1 • gnu bash 4.2 • gnu bash 4.3

Related

Weakness · CWE (1)

  • CWE-78 Improper Neutralization of Special Elements used in an OS Command weakness

References