Improper input validation in GNOME Nautilus
CVE-2017-14604
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.025 (84.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000
Affected products
- GNOME Nautilus
- Debian Linux — versions 8.0, 9.0, 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/freedomofpress/securedrop/issues/2238 (Third Party Advisory)
- bugs.debian.org/cgi-bin/bugreport.cgi (Third Party Advisory, Issue Tracking)
- github.com/GNOME/nautilus/commit/1630f53481f445ada0a455e9979236d31a8d3bb0 (Patch, Third Party Advisory, Issue Tracking)
- bugzilla.gnome.org/show_bug.cgi (Issue Tracking, Vendor Advisory)
- www.securityfocus.com/bid/101012 (VDB Entry, Third Party Advisory, vdb-entry)
- www.debian.org/security/2017/dsa-3994 (vendor-advisory, Third Party Advisory)
- github.com/GNOME/nautilus/commit/bc919205bf774f6af3fa7154506c46039af5a69b (Patch, Third Party Advisory, Issue Tracking)
- micahflee.com/2017/04/breaking-the-security-model-of-subgraph-os/ (Exploit, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:0223 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-14604?
- CVE-2017-14604 is a medium-severity vulnerability in GNOME Nautilus, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2017-09-20.
- How severe is CVE-2017-14604?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2017-14604 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.