https://www.cryptocoinsnews.com/bitcoin-at-risk-major-vulnerability-discovered-in-gnu-bash/
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This security vulnerability affects GNU Bash versions 1.14 (released in 1994) through to the most recent version 4.3, according to NVD. The pervasive use of bash on systems across the internet means that the vulnerability is as serious as the Heartbleed bug. If you run a Linux (or any *nix) system it is most definitely vulnerable – and has been since it’s first boot.