Shellshock incomplete fix in GNU Bash
GNU Bash through 4.3 bash43-025 incorrectly processes trailing strings that follow certain malformed exported function definitions in environment variable values. This issue exists because the original fix for CVE-2014-6271 was incomplete. When Bash is invoked in a context where an attacker can influence environment variables across a privilege or trust boundary, the malformed function definition plus trailing payload can be interpreted in a way that results in unintended command execution or file creation/write side effects. Documented attack surfaces include OpenSSH sshd configurations using ForceCommand, Apache HTTP Server mod_cgi and mod_cgid, DHCP client script execution paths, and similar situations where externally influenced environment data is passed to Bash.
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Impact, mitigation & remediation
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Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
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Exploits
No valid public exploits. Mallory filtered out 14 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
43 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A specific vulnerability cited as an example of exploiting Internet-facing systems for initial access; no further technical or operational detail is given in the content.
A specific vulnerability cited as an example of exploiting Internet-facing systems for initial access; no further technical detail is given in the content.
A specific vulnerability cited as an example of exploitation of Internet-facing systems; no further technical detail is provided in the content.
A critical GNU Bash remote code execution vulnerability resulting from an incomplete fix for Shellshock-related malformed function definitions in environment variables.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.