OS Command Injection in GNU Bash (CVE‑2014‑6278) Enables Remote Code Execution
What It Is — GNU Bash contains an OS command‑injection flaw that lets an attacker execute arbitrary commands by supplying a crafted environment variable. The issue is tracked as CVE‑2014‑6278 and appears in CISA’s Known Exploited Vulnerabilities catalog.
Exploitability — Public proof‑of‑concept exploits exist; the vulnerability has been observed in the wild. CVSS v3.1 base score 7.8 (High).
Affected Products — GNU Bash (all versions prior to the patch released with Bash 4.3). Bash is the default shell on most Linux distributions and macOS.
Why It Matters for Trust & Control Assurance
- Continuous inventory and version‑control evidence are required to prove critical components are patched, a core element of audit readiness.
- The flaw exposes gaps in configuration‑management controls; without verifiable remediation, audit trails may be incomplete.
- Successful exploitation can bypass higher‑level application controls, weakening the integrity of data‑processing controls that auditors examine.
Recommended Actions
- Inventory every system running Bash and verify the installed version against the patch baseline.
- Deploy the upstream security update (Bash 4.3‑release‑patch or later) on all affected hosts.
- Integrate Bash version checks into continuous compliance monitoring to generate defensible evidence for audits.
- Record the remediation in your change‑management system and map the fix to the “Software Patch Management” control objective in your framework of record.
Source: CISA KEV – CVE‑2014‑6278