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CVE
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CVE-2017-14604

Date: (C)2017-09-22   (M)2017-10-10
 
CVSS Score: 4.0Access Vector: NETWORK
Exploitability Subscore: 8.0Access Complexity: LOW
Impact Subscore: 2.9Authentication: SINGLE_INSTANCE
 Confidentiality: NONE
 Integrity: PARTIAL
 Availability: NONE











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.

Reference:
BID-101012
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=860268
https://bugzilla.gnome.org/show_bug.cgi?id=777991
https://github.com/GNOME/nautilus/commit/1630f53481f445ada0a455e9979236d31a8d3bb0
https://github.com/GNOME/nautilus/commit/bc919205bf774f6af3fa7154506c46039af5a69b
https://github.com/freedomofpress/securedrop/issues/2238
https://micahflee.com/2017/04/breaking-the-security-model-of-subgraph-os/

CWE    1
CWE-20
OVAL    1
oval:org.secpod.oval:def:603125

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