Ubuntu Security Notice 5378-3 - USN-5378-2 fixed a vulnerability in XZ Utils. This update provides the corresponding update for Ubuntu 14.04 ESM and 16.04 ESM. Cleemy Desu Wayo discovered that Gzip incorrectly handled certain filenames. If a user or automated system were tricked into performing zgrep operations with specially crafted filenames, a remote attacker could overwrite arbitrary files.
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