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critical·Product Based Web Vulnerabilities·Updated Dec 16, 2023

CVE-2014-6271 Scanner

CVE-2014-6271 scanner - Remote Code Execution (RCE) vulnerability in GNU Bash

Est. Time~15 seconds
Scan TypeSingle Scan
Targetsurl
CostFree
3k
Times Used
continuous scan runs
3.7k
Continuously Checked
assets under CS
3
Vulnerabilities Found
confirmed findings
References
🔴
CISA Known Exploited Vulnerability
This CVE is actively exploited in the wild. CISA mandates federal agencies to patch immediately.
CVECVE-2014-6271
9.8
CVSScritical
Exploitable remotely over the internet · no authentication required.

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.

Attack Vector
Network
Privileges Req.
None
User Interaction
None
Affected
n/aby n/a
n/a
Updated Aug 21, 2026View on NVD →
Detail

GNU Bash, also known as Bash, is a command-line shell used on UNIX and Linux operating systems. It is an essential tool for system administrators and developers to execute scripts and run commands in the terminal. Bash allows users to access files, manage directories, and interact with system services. As an open-source software, Bash has undergone multiple revisions and updates to improve its functionality and security.

The CVE-2014-6271 vulnerability is a critical security flaw in Bash. This vulnerability allows remote attackers to execute arbitrary code by injecting malicious code through specially crafted environment variables. It was discovered in September 2014 and affected all versions of Bash from 1.14 to 4.3. Attackers could exploit this vulnerability to gain unauthorized access to sensitive information, take control of affected systems, and launch further attacks.

The exploitation of this vulnerability can lead to numerous consequences such as data breaches, stolen credentials, and the spread of malware. Attackers can use Bash to bypass security measures or gain root access to the system, providing a platform to carry out further attacks or damage. Sensitive data like passwords, credit card numbers, bank account information, and personally identifiable information (PII) are all at risk.

At s4e.io, we take security vulnerabilities seriously. With our pro features, you can easily and quickly learn about vulnerabilities in your digital assets and protect them from potential attacks. We provide detailed insights and recommendations on how to secure your systems, network, and applications from known and unknown cyber threats. Stay safe and secure with s4e.io.

 

REFERENCES

Solution Advice

Fortunately, there are precautions that can be taken to protect against this vulnerability. Here are some bullet points to follow:

  • Update Bash to the latest version.
  • Limit the exposure of Bash to lower-privileged users.
  • Monitor the system for any suspicious activities.
  • Configure firewalls to prevent unauthorized access.
  • Use security tools like antivirus, intrusion detection and prevention systems, and network scanners.

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CVE-2014-6271 scanner - Remote Code Execution (RCE) vulnerability in GNU Bash | S4E