Problem: [security]: arbitrary Ex command execution during C
omni-completion (Threonine)
Solution: Match tags typeref literally to block Ex command injection
(Yasuhiro Matsumoto).
Escaping only "/" and "\" left the typeref able to break out of the
:vimgrep pattern without a "/": an unclosed "[" makes vimgrep's pattern
skipping fail, and the parser then treats a following "|" as a command
separator, so the tag value runs as Ex commands during C omni-completion.
Match the field literally with \V so no regex metacharacter can affect
pattern parsing.
Github Security Advisory:
https://github.com/vim/vim/security/advisories/GHSA-cx73-phcg-3j5g2f628d8104
Co-authored-by: Yasuhiro Matsumoto <mattn.jp@gmail.com>
Problem: [security]: With C omni-completion, a crafted tags file can execute
arbitrary Ex commands when completing a struct/union member
(cipher-creator)
Solution: Escape the type field before inserting it into the :vimgrep
pattern so it cannot close the pattern and start a new command
(Hirohito Higashi).
Github Security Advisory:
https://github.com/vim/vim/security/advisories/GHSA-mf92-v4xw-j45x6b611b0d15
Co-authored-by: Hirohito Higashi <h.east.727@gmail.com>
