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.
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
| Link | Tags |
|---|---|
| https://security.gentoo.org/glsa/201903-08 | third party advisory vendor advisory |
| http://www.securityfocus.com/bid/106358 | vdb entry third party advisory |
| https://twitter.com/marcan42/status/1077676739877232640 | third party advisory exploit |
| http://git.savannah.gnu.org/cgit/wget.git/tree/NEWS | third party advisory release notes |
| https://security.netapp.com/advisory/ntap-20190321-0002/ | |
| https://usn.ubuntu.com/3943-1/ | vendor advisory |
| https://access.redhat.com/errata/RHSA-2019:3701 | vendor advisory |