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lwp-download in libwww-perl before 5.835 does not reject downloads to filenames that begin with a . (dot) character, which allows remote servers to create or overwrite files via (1) a 3xx redirect to a URL with a crafted filename or (2) a Content-Disposition header that suggests a crafted filename, and possibly execute arbitrary code as a consequence of writing to a dotfile in a home directory.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade libwww-perl | Jul 30, 2024 | Jul 6, 2010 |
| Freebsd | — | Upgrade p5-libwww | Dec 10, 2025 | Aug 31, 2010 |
| Gentoo Linux | — | Upgrade dev-perl/libwww-perl. | Oct 30, 2017 | Jul 6, 2010 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 17, 2010 |
| Ubuntu | — | Upgrade libwww-perl | Nov 8, 2024 | Jul 6, 2010 |
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