CVE-2021-25931: Cross-Site Request Forgery (CSRF)

May 25, 2021 (updated May 28, 2021)

In OpenNMS Horizon, versions opennms-1-0-stable through opennms-27.1.0-1; OpenNMS Meridian, versions meridian-foundation-2015.1.0-1 through meridian-foundation-2019.1.18-1; meridian-foundation-2020.1.0-1 through meridian-foundation-2020.1.6-1 are vulnerable to CSRF, due to no CSRF protection at /opennms/admin/userGroupView/users/updateUser. This flaw allows assigning ROLE_ADMIN security role to a normal user. Using this flaw, an attacker can trick the admin user to assign administrator privileges to a normal user by enticing him to click upon an attacker-controlled website.

References

github.com/OpenNMS/opennms/commit/607151ea8f90212a3fb37c977fa57c7d58d26a84
github.com/OpenNMS/opennms/commit/eb08b5ed4c5548f3e941a1f0d0363ae4439fa98c
github.com/advisories/GHSA-2rq5-68hm-h4j8
nvd.nist.gov/vuln/detail/CVE-2021-25931

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