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[SPARK-38631][CORE] Uses Java-based implementation for un-tarring at … #640

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Commits on Jul 3, 2023

  1. [SPARK-38631][CORE] Uses Java-based implementation for un-tarring at …

    …Utils.unpack
    
    ### What changes were proposed in this pull request?
    
    This PR proposes to use `FileUtil.unTarUsingJava` that is a Java implementation for un-tar `.tar` files. `unTarUsingJava` is not public but it exists in all Hadoop versions from 2.1+, see HADOOP-9264.
    
    The security issue reproduction requires a non-Windows platform, and a non-gzipped TAR archive file name (contents don't matter).
    
    ### Why are the changes needed?
    
    There is a risk for arbitrary shell command injection via `Utils.unpack` when the filename is controlled by a malicious user. This is due to an issue in Hadoop's `unTar`, that is not properly escaping the filename before passing to a shell command:https://github.com/apache/hadoop/blob/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileUtil.java#L904
    
    ### Does this PR introduce _any_ user-facing change?
    
    Yes, it prevents a security issue that, previously, allowed users to execute arbitrary shall command.
    
    ### How was this patch tested?
    
    Manually tested in local, and existing test cases should cover.
    
    Closes apache#35946 from HyukjinKwon/SPARK-38631.
    
    Authored-by: Hyukjin Kwon <gurwls223@apache.org>
    Signed-off-by: Hyukjin Kwon <gurwls223@apache.org>
    (cherry picked from commit 057c051)
    Signed-off-by: Hyukjin Kwon <gurwls223@apache.org>
    HyukjinKwon authored and Mrhs121 committed Jul 3, 2023
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