[release-branch.go1.19] path/filepath: do not Clean("a/../c:/b") into c:\b on Windows
Do not permit Clean to convert a relative path into one starting
with a drive reference. This change causes Clean to insert a .
path element at the start of a path when the original path does not
start with a volume name, and the first path element would contain
a colon.
This may introduce a spurious but harmless . path element under
some circumstances. For example, Clean("a/../b:/../c") becomes `.\c`.
This reverts CL 401595, since the change here supersedes the one
in that CL.
Thanks to RyotaK (https://twitter.com/ryotkak) for reporting this issue.
Updates #57274
Fixes #57275
Fixes CVE-2022-41722
Change-Id: I837446285a03aa74c79d7642720e01f354c2ca17
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/
1675249
Reviewed-by: Roland Shoemaker <bracewell@google.com>
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(cherry picked from commit
780dfa043ff5192c37de0d6fd1053a66b2b9f378)
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/
1728206
Reviewed-by: Damien Neil <dneil@google.com>
Run-TryBot: Roland Shoemaker <bracewell@google.com>
Reviewed-by: Tatiana Bradley <tatianabradley@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/468115
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