Improper input validation in Ametys
CVE-2017-16935
Ametys before 4.0.3 requires authentication only for URIs containing a /cms/ substring, which allows remote attackers to bypass intended access restrictions via a direct request to /plugins/core-ui/servercomm/messages.xml, as demonstrated by changing the admin password by obtaining account details via a users/search.json request, and then modifying the account via an editUser request.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.077 (94.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.077 · newest: 0.077 · change: 0.000
Affected products
Weakness classification (CWE)
References
- blogs.securiteam.com/index.php/archives/3517 (Technical Description, Exploit, Third Party Advisory)
- issues.ametys.org/browse/RUNTIME-2582 (Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-16935?
- CVE-2017-16935 is a critical-severity vulnerability in Ametys, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2017-11-24.
- How severe is CVE-2017-16935?
- Critical severity. CVSS v3 base score is 9.8 out of 10.