ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2014-6277

GNU Bourne-Again Shell (Bash) Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Published Mar 1, 2018 · catalog updated Mar 1, 2018 · GNU Bourne-Again Shell (Bash)

Patch now

CVE-2014-6277 is in the CISA known-exploited catalog. Confirm GNU Bourne-Again Shell (Bash) against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
64.33%
Remediation
Remediation guidance
Affected products
vendor GNU Bourne-Again Shell (Bash)

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 code or cause a denial of service (uninitialized memory access, and untrusted-pointer read and write operations) 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 executio

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor GNU Bourne-Again Shell (Bash)version unspecified

How to fix CVE-2014-6277

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2014-6277 is in the CISA known-exploited catalog. Confirm GNU Bourne-Again Shell (Bash) against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 64.33%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 1, 2018 · VulnCheck KEV

    Detected

    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 code or cause a denial of service (uninitialized memory access, and untrusted-pointer read and write operations) via a crafted environment, as demonstrated by vectors involving the ForceCommand feature in OpenSSH sshd, the mod_cgi a

  2. Mar 1, 2018 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2014-6277

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2014-6277

    30-day exploitation probability 64.3%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2014-6277

    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 code or cause a denial of service (uninitialized memory access, and untrusted-pointer read and write operations)

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.