Gentoo Linux Security Advisory 201402-4 - Multiple vulnerabilities have been found in libwww-perl, the worst of which could allow attackers to execute arbitrary code. Versions less than 6.30.0 are affected.
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Mandriva Linux Security Advisory 2010-167 - lwp-download in libwww-perl before 5.835 does not reject downloads to filenames that begin with a. character, which allows remote servers to create or overwrite files via a 3xx redirect to a URL with a crafted filename or 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.
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Ubuntu Security Notice 981-1 - It was discovered that libwww-perl incorrectly filtered filenames suggested by Content-Disposition headers. If a user were tricked into downloading a file from a malicious site, a remote attacker could overwrite hidden files in the user's directory.
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