Intelligence online17 sources monitored8 actively exploited 7d26 published 24hChecked recently
Vulnerability record

CVE-2014-6271

GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Vulnerability

CriticalExploitation confirmedCISA KEV
What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Bourne-Again Shell (Bash), fix it now.

CISA required action: Apply updates per vendor instructions.

US federal civilian agencies must remediate by Jul 28, 2022.

Patch status

Official fix available since

Apply the vendor's update to every affected system. Check the fixed-in versions below where known.

Basis: NVD patch reference

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.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

ProductVendorAffected versionsFixed inSource
Bourne-Again Shell (Bash)GNU——KEV
GNU BashGNU<= 4.3—NVD
QTSQNAP< 4.1.1; 4.1.14.1.1NVD
Security GatewayCheck Point< r77.30r77.30NVD

Sources: KEV = CISA Known Exploited Vulnerabilities catalog; NVD = NIST National Vulnerability Database.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdateKEV

    CVE-2014-6271 scored CVSS 9.8: GNU Bourne-Again Shell (Bash), GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Vulnerability

    CISA lists this as exploited in the wild. Unpatched Bourne-Again Shell (Bash) systems are exposed to active attacks now.

    Basis: NIST National Vulnerability Database

  2. Patch releasedUpdateKEV

    Patch released for CVE-2014-6271: GNU Bourne-Again Shell (Bash), GNU Bourne-Again Shell (Bash) Arbitrary Code Execution Vulnerability

    An official fix is now available for GNU Bourne-Again Shell (Bash). This vulnerability is being exploited, so apply it promptly.

    Basis: NVD patch reference

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References