The path autocompletion feature in Bash 4.4 allows local users to gain privileges via a crafted filename starting with a " (double quote) character and a command substitution metacharacter.
rbash in Bash before 4.4-beta2 did not prevent the shell user from modifying BASH_CMDS, thus allowing the user to execute any command with the permissions of the shell.
popd in bash might allow local users to bypass the restricted shell and cause a use-after-free via a crafted address.
Published 2017-01-23 · Modified
6.2EPSS 0.004
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