GNOME Nautilus before 3.23.90 allows attackers to spoof a file type by using the .desktop file extension, as demonstrated by an attack in which a .desktop file's Name field ends in .pdf but this file's Exec field launches a malicious "sh -c" command. In other words, Nautilus provides no UI indication that a file actually has the potentially unsafe .desktop extension; instead, the UI only shows the .pdf extension. One (slightly) mitigating factor is that an attack requires the .desktop file to have execute permission. The solution is to ask the user to confirm that the file is supposed to be treated as a .desktop file, and then remember the user's answer in the metadata::trusted field.
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
| Link | Tags |
|---|---|
| https://github.com/freedomofpress/securedrop/issues/2238 | third party advisory |
| https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=860268 | third party advisory issue tracking |
| https://github.com/GNOME/nautilus/commit/1630f53481f445ada0a455e9979236d31a8d3bb0 | patch third party advisory issue tracking |
| https://bugzilla.gnome.org/show_bug.cgi?id=777991 | vendor advisory issue tracking |
| http://www.securityfocus.com/bid/101012 | third party advisory vdb entry |
| http://www.debian.org/security/2017/dsa-3994 | third party advisory vendor advisory |
| https://github.com/GNOME/nautilus/commit/bc919205bf774f6af3fa7154506c46039af5a69b | patch third party advisory issue tracking |
| https://micahflee.com/2017/04/breaking-the-security-model-of-subgraph-os/ | third party advisory exploit |
| https://access.redhat.com/errata/RHSA-2018:0223 | third party advisory vendor advisory |