CVE-2007-4559 Patch #1927
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CVE-2007-4559 Patch #1927
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Thank you very much for your PR. It's really appreciated from our side. Internally we reviewed your PR on the same day. In our case, the downloaded tar-file checked directly via a hardcoded sha256 hash and we can trust the packager. Thanks again for the PR, we'll soon change it to a more appropriate mergable form. |
k9ert
approved these changes
Oct 20, 2022
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Patching CVE-2007-4559
Hi, we are security researchers from the Advanced Research Center at Trellix. We have began a campaign to patch a widespread bug named CVE-2007-4559. CVE-2007-4559 is a 15 year old bug in the Python tarfile package. By using extract() or extractall() on a tarfile object without sanitizing input, a maliciously crafted .tar file could perform a directory path traversal attack. We found at least one unsantized extractall() in your codebase and are providing a patch for you via pull request. The patch essentially checks to see if all tarfile members will be extracted safely and throws an exception otherwise. We encourage you to use this patch or your own solution to secure against CVE-2007-4559. Further technical information about the vulnerability can be found in this blog.
If you have further questions you may contact us through this projects lead researcher Kasimir Schulz.