Local storage should not store files as executable (#22162) (#22163)

Backport #22162

The PR #21198 introduced a probable security vulnerability which
resulted in making all storage files be marked as executable.

This PR ensures that these are forcibly marked as non-executable.

Fix #22161

Signed-off-by: Andrew Thornton <art27@cantab.net>

Signed-off-by: Andrew Thornton <art27@cantab.net>
tokarchuk/v1.18
zeripath 2 years ago committed by GitHub
parent e88218f4be
commit 56bded9d8d
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GPG Key ID: 4AEE18F83AFDEB23
  1. 3
      modules/storage/local.go

@ -103,7 +103,8 @@ func (l *LocalStorage) Save(path string, r io.Reader, size int64) (int64, error)
return 0, err
}
// Golang's tmp file (os.CreateTemp) always have 0o600 mode, so we need to change the file to follow the umask (as what Create/MkDir does)
if err := util.ApplyUmask(p, os.ModePerm); err != nil {
// but we don't want to make these files executable - so ensure that we mask out the executable bits
if err := util.ApplyUmask(p, os.ModePerm&0o666); err != nil {
return 0, err
}

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