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Clean Path in Options (#23006)

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At the Moment it is possible to read files in another Directory as
supposed using the Options functions. e.g.
`options.Gitignore("../label/Default) `. This was discovered while
working on #22783, which exposes `options.Gitignore()` through the
public API. At the moment, this is not a security problem, as this
function is only used internal, but I thought it would be a good idea to
make a PR to fix this for all types of Options files, not only
Gitignore, to make it safe for the further. This PR should be merged
before the linked PR.

---------

Co-authored-by: Jason Song <i@wolfogre.com>
This commit is contained in:
JakobDev 2023-03-08 08:07:58 +01:00 committed by GitHub
parent 7e3b7c2346
commit a12f575737
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2 changed files with 8 additions and 8 deletions
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8
modules/options/dynamic.go
View file

@ -79,22 +79,22 @@ func WalkLocales(callback func(path, name string, d fs.DirEntry, err error) erro
// Readme reads the content of a specific readme from static or custom path. // Readme reads the content of a specific readme from static or custom path.
func Readme(name string) ([]byte, error) { func Readme(name string) ([]byte, error) {
return fileFromDir(path.Join("readme", name)) return fileFromDir(path.Join("readme", path.Clean("/"+name)))
} }
// Gitignore reads the content of a specific gitignore from static or custom path. // Gitignore reads the content of a specific gitignore from static or custom path.
func Gitignore(name string) ([]byte, error) { func Gitignore(name string) ([]byte, error) {
return fileFromDir(path.Join("gitignore", name)) return fileFromDir(path.Join("gitignore", path.Clean("/"+name)))
} }
// License reads the content of a specific license from static or custom path. // License reads the content of a specific license from static or custom path.
func License(name string) ([]byte, error) { func License(name string) ([]byte, error) {
return fileFromDir(path.Join("license", name)) return fileFromDir(path.Join("license", path.Clean("/"+name)))
} }
// Labels reads the content of a specific labels from static or custom path. // Labels reads the content of a specific labels from static or custom path.
func Labels(name string) ([]byte, error) { func Labels(name string) ([]byte, error) {
return fileFromDir(path.Join("label", name)) return fileFromDir(path.Join("label", path.Clean("/"+name)))
} }
// fileFromDir is a helper to read files from static or custom path. // fileFromDir is a helper to read files from static or custom path.

8
modules/options/static.go
View file

@ -84,22 +84,22 @@ func WalkLocales(callback func(path, name string, d fs.DirEntry, err error) erro
// Readme reads the content of a specific readme from bindata or custom path. // Readme reads the content of a specific readme from bindata or custom path.
func Readme(name string) ([]byte, error) { func Readme(name string) ([]byte, error) {
return fileFromDir(path.Join("readme", name)) return fileFromDir(path.Join("readme", path.Clean("/"+name)))
} }
// Gitignore reads the content of a gitignore locale from bindata or custom path. // Gitignore reads the content of a gitignore locale from bindata or custom path.
func Gitignore(name string) ([]byte, error) { func Gitignore(name string) ([]byte, error) {
return fileFromDir(path.Join("gitignore", name)) return fileFromDir(path.Join("gitignore", path.Clean("/"+name)))
} }
// License reads the content of a specific license from bindata or custom path. // License reads the content of a specific license from bindata or custom path.
func License(name string) ([]byte, error) { func License(name string) ([]byte, error) {
return fileFromDir(path.Join("license", name)) return fileFromDir(path.Join("license", path.Clean("/"+name)))
} }
// Labels reads the content of a specific labels from static or custom path. // Labels reads the content of a specific labels from static or custom path.
func Labels(name string) ([]byte, error) { func Labels(name string) ([]byte, error) {
return fileFromDir(path.Join("label", name)) return fileFromDir(path.Join("label", path.Clean("/"+name)))
} }
// fileFromDir is a helper to read files from bindata or custom path. // fileFromDir is a helper to read files from bindata or custom path.