Fix partial path traversal Java example#11899
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The Java recommendation example for the "Partial path traversal vulnerability from remote" query doesn't seem right to me. Indeed, the following statement doesn't compile, since `dir.getCanonicalPath()` returns a String: ``` dir.getCanonicalPath().toPath() ``` Maybe the author wanted to state `dir.getCanonicalFile().toPath()`, which would compile, but is useless compared to `dir.getCanonicalPath()`. Moreover, `parent.getCanonicalFile().toPath()` or `parent.getCanonicalPath()` will **not** be slash-terminated, contrary to what the description says. From what I can see (and test), the correct fix is to concatenate `File.separator` to the parent canonical path.
atorralba
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Jan 17, 2023
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Good catch! Your suggestion is also consistent with the test cases, so I'd say you're right. Thanks for your contribution!
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QHelp previews: |
smowton
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Jan 17, 2023
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This isn't correct. This should have used |
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Resolved by #12735 |
JLLeitschuh
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Mar 31, 2023
The original wouldn't compile, and the fix made by github#11899 is sub-optimal. This keeps the entire comparision using the Java `Path` object, which is optimal. Signed-off-by: Jonathan Leitschuh <Jonathan.Leitschuh@gmail.com>
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The original wouldn't compile, and the fix made by github#11899 is sub-optimal. This keeps the entire comparision using the Java `Path` object, which is optimal. Signed-off-by: Jonathan Leitschuh <Jonathan.Leitschuh@gmail.com>
JLLeitschuh
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Mar 31, 2023
The original wouldn't compile, and the fix made by github#11899 is sub-optimal. This keeps the entire comparision using the Java `Path` object, which is optimal. Signed-off-by: Jonathan Leitschuh <Jonathan.Leitschuh@gmail.com>
JLLeitschuh
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Apr 1, 2023
The original wouldn't compile, and the fix made by github#11899 is sub-optimal. This keeps the entire comparision using the Java `Path` object, which is optimal. Signed-off-by: Jonathan Leitschuh <Jonathan.Leitschuh@gmail.com>
JLLeitschuh
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Apr 1, 2023
The original wouldn't compile, and the fix made by github#11899 is sub-optimal. This keeps the entire comparision using the Java `Path` object, which is optimal. Signed-off-by: Jonathan Leitschuh <Jonathan.Leitschuh@gmail.com>
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Thanks @JLLeitschuh |
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The Java recommendation example for the "Partial path traversal vulnerability from remote" query doesn't seem right to me. Indeed, the following statement doesn't compile, since
dir.getCanonicalPath()returns a String:Maybe the author wanted to state
dir.getCanonicalFile().toPath(), which would compile, but is useless compared todir.getCanonicalPath().Moreover,
parent.getCanonicalFile().toPath()orparent.getCanonicalPath()will not be slash-terminated, contrary to what the description says. From what I can see (and test), the correct fix is to concatenateFile.separatorto the parent canonical path.This is linked to #9742.