Deserialization in Openmrs
CVE-2017-12796
The Reporting Compatibility Add On before 2.0.4 for OpenMRS, as distributed in OpenMRS Reference Application before 2.6.1, does not authenticate users when deserializing XML input into ReportSchema objects. The result is that remote unauthenticated users are able to execute operating system commands by crafting malicious XML payloads, as demonstrated by a single admin/reports/reportSchemaXml.form request.
Vulnerability class: Insecure Deserialization
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: 0.042 (90.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.042 · newest: 0.042 · change: 0.000
Affected products
Weakness classification (CWE)
References
- talk.openmrs.org/t/critical-security-advisory-2017-09-12/13291 (Vendor Advisory)
- wiki.openmrs.org/display/RES/Release+Notes+2.6.1 (Release Notes, Vendor Advisory)
- isears.github.io/jekyll/update/2017/10/21/openmrs-rce.html (Exploit)
Frequently asked questions
- What is CVE-2017-12796?
- CVE-2017-12796 is a critical-severity vulnerability in Openmrs, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2017-10-23.
- How severe is CVE-2017-12796?
- Critical severity. CVSS v3 base score is 9.8 out of 10.