The expansion of '\h' in the prompt string in bash 4.3 allows remote authenticated users to execute arbitrary code via shell metacharacters placed in 'hostname' of a machine.
{ "binaries": [ { "binary_version": "4.3-7ubuntu1.7", "binary_name": "bash" }, { "binary_version": "4.3-7ubuntu1.7", "binary_name": "bash-builtins" }, { "binary_version": "4.3-7ubuntu1.7", "binary_name": "bash-static" } ], "availability": "No subscription required" }
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-0634.json"
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