CVE-2020-5206

Authentication Bypass For Endpoints With Anonymous Access in OpenCast

Published Jan 30, 2020 CVSS 3.1 · 8.7 High EPSS 1.3% KEV · Not listed
Description
In Opencast before 7.6 and 8.1, using a remember-me cookie with an arbitrary username can cause Opencast to assume proper authentication for that user even if the remember-me cookie was incorrect given that the attacked endpoint also allows anonymous access. This way, an attacker can, for example, fake a remember-me token, assume the identity of the global system administrator and request non-public content from the search service without ever providing any proper authentication. This problem is fixed in Opencast 7.6 and Opencast 8.1

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2020-0278 In Opencast before 7.6 and 8.1, using a remember-me cookie with an arbitrary username can cause Opencast to assume proper authentication for that user even if the remember-me cookie was incorrect given that the attacked endpoint also allows anonymous access. This way, an attacker can, for example, fake a remember-me token, assume the identity of the global system administrator and request non-public content from the search service without ever providing any proper authentication. This problem is fixed in Opencast 7.6 and Opencast 8.1
Github GHSA Github GHSA GHSA-vmm6-w4cf-7f3x Authentication Bypass For Endpoints With Anonymous Access in Opencast
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Aug 4, 2024, 8:22 AM
Reserved
Jan 2, 2020, 12:00 AM
Status
Modified
Published
Jan 30, 2020, 10:15 PM
Modified
Jun 17, 2026, 3:21 AM