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https://issues.apache.org/jira/browse/CAMEL-24627?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on CAMEL-24627 started by Andrea Cosentino.
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> camel-file: resolve symlinks when containing local work directory downloads
> (parity with camel-azure/google-storage)
> --------------------------------------------------------------------------------------------------------------------
>
> Key: CAMEL-24627
> URL: https://issues.apache.org/jira/browse/CAMEL-24627
> Project: Camel
> Issue Type: Improvement
> Components: camel-file
> Reporter: Andrea Cosentino
> Assignee: Andrea Cosentino
> Priority: Major
>
> Local work directory downloads in the file-based components (camel-file,
> camel-ftp/sftp, camel-smb, camel-mina-sftp, camel-azure-files) are contained
> within the configured localWorkDirectory by
> GenericFileHelper.jailToLocalWorkDirectory, which currently performs a
> lexical path-boundary check only.
> CAMEL-24548 / CAMEL-24549 hardened the equivalent containment in
> camel-azure-storage-blob/datalake and camel-google-storage
> (AzureFileNameHelper / GoogleCloudStorageFileNameHelper) by additionally
> resolving existing filesystem path segments (following symbolic links) before
> checking that the destination stays inside the configured directory.
> GenericFileHelper.jailToLocalWorkDirectory should be brought to parity so
> that a symbolic link inside the local work directory that resolves outside of
> it cannot be used to write files elsewhere. Valid nested download paths
> continue to work unchanged.
> Affected code:
> components/camel-file/src/main/java/org/apache/camel/component/file/GenericFileHelper.java
> (jailToLocalWorkDirectory). Callers: FtpOperations, SftpOperations,
> SmbOperations, MinaSftpOperations, FilesOperations (azure-files).
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