[3.8] wget: Information exposure in set_file_metadata function in xattr.c (CVE-2018-20483)
set_file_metadata in xattr.c in GNU Wget before 1.20.1 stores a file’s
origin URL in the user.xdg.origin.url metadata attribute of the extended
attributes of the
downloaded file, which allows local users to obtain sensitive information (e.g., credentials contained in the URL) by reading this attribute, as demonstrated by getfattr.
This also applies to Referer information in the user.xdg.referrer.url metadata attribute. According to 2016-07-22 in the Wget ChangeLog, user.xdg.origin.url was
partially based on the behavior of fwrite_xattr in tool_xattr.c in curl.
Fixed In Version:
(from redmine: issue id 9818, created on 2019-01-01, closed on 2019-01-09)
- parent #9816 (closed)