CVE-2020-5206

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...

Authentication flaw

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...

CVE-2020-5231

In Opencast before 7.6 and 8.1, users with the role ROLECOURSEADMIN can use the user-utils endpoint to create new users not including the role ROLEADMIN. ROLECOURSEADMIN is a non-standard role in Opencast which is referenced neither in the documentation nor in any code except for tests but only i...

Default configuration

In Opencast before 7.6 and 8.1, users with the role ROLECOURSEADMIN can use the user-utils endpoint to create new users not including the role ROLEADMIN. ROLECOURSEADMIN is a non-standard role in Opencast which is referenced neither in the documentation nor in any code except for tests but only i...

CVE-2020-5206 Authentication Bypass For Endpoints With Anonymous Access in OpenCast

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...

CVE-2020-5206

Opencast prior to versions 7.6 and 8.1 was vulnerable to an authentication bypass: a fake remember-me token could be accepted as a valid login for a user (even if the token was incorrect) because the attacked endpoint allowed anonymous access. This could let an attacker impersonate a user, includ...

Unauthenticated Access Via OAI-PMH

Impact Media publication via OAI-PMH allows unauthenticated public access to all media and metadata by default. OAI-PMH is part of the default workflow and is activated by default, requiring active user intervention of users to protect media. This leads to users unknowingly handing out public...

GHSA-6F54-3QR9-PJGJ Unauthenticated Access Via OAI-PMH

Impact Media publication via OAI-PMH allows unauthenticated public access to all media and metadata by default. OAI-PMH is part of the default workflow and is activated by default, requiring active user intervention of users to protect media. This leads to users unknowingly handing out public...

Password Hashing: Do not use MD5

Impact User passwords are stored in the database using the rather outdated and cryptographically insecure MD5 hash algorithm. Furthermore, the hashes are salted using the username instead of a random salt, causing hashes for users with the same username and password to collide which is problemati...

GHSA-H362-M8F2-5X7C Password Hashing: Do not use MD5

Impact User passwords are stored in the database using the rather outdated and cryptographically insecure MD5 hash algorithm. Furthermore, the hashes are salted using the username instead of a random salt, causing hashes for users with the same username and password to collide which is problemati...

Unsafe Identifiers in Opencast

Impact Opencast allows almost arbitrary identifiers for media packages and elements to be used. This can be problematic for operation and security since such identifiers are sometimes used for file system operations which may lead to an attacker being able to escape working directories and write...

GHSA-W29M-FJP4-QHMQ Unsafe Identifiers in Opencast

Impact Opencast allows almost arbitrary identifiers for media packages and elements to be used. This can be problematic for operation and security since such identifiers are sometimes used for file system operations which may lead to an attacker being able to escape working directories and write...

GHSA-MH8G-HPRG-8363 Hard-Coded Key Used For Remember-me Token in Opencast

Impact The security configuration in etc/security/mhdefaultorg.xml enables a remember-me cookie based on a hash created from the username, password, and an additional system key. Opencast has hard-coded this system key in the large XML file and never mentions to change this, basically ensuring th...

Hard-Coded Key Used For Remember-me Token in Opencast

Impact The security configuration in etc/security/mhdefaultorg.xml enables a remember-me cookie based on a hash created from the username, password, and an additional system key. Opencast has hard-coded this system key in the large XML file and never mentions to change this, basically ensuring th...

Users with ROLE_COURSE_ADMIN can create new users in Opencast

Impact Users with the role ROLECOURSEADMIN can use the user-utils endpoint to create new users not including the role ROLEADMIN. For example: bash Use the admin to create a new user with ROLECOURSEADMIN using the admin user. We expect this to work. % curl -i -u admin:opencast...

GHSA-94QW-R73X-J7HG Users with ROLE_COURSE_ADMIN can create new users in Opencast

Impact Users with the role ROLECOURSEADMIN can use the user-utils endpoint to create new users not including the role ROLEADMIN. For example: bash Use the admin to create a new user with ROLECOURSEADMIN using the admin user. We expect this to work. % curl -i -u admin:opencast...

GHSA-VMM6-W4CF-7F3X Authentication Bypass For Endpoints With Anonymous Access in Opencast

Impact 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 toke...

Authentication Bypass For Endpoints With Anonymous Access in Opencast

Impact 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 toke...

CVE-2020-5231

Opencast is affected in versions before 7.6 and before 8.1 where users with the non‑standard ROLE_COURSE_ADMIN can use the user-utils endpoint to create new users (not granting ROLE_ADMIN). Root cause: a misconfiguration in security allowing creation by a course admin. Impact: authorization bypas...

CVE-2020-5231 Opencast users with ROLE_COURSE_ADMIN can create new users

In Opencast before 7.6 and 8.1, users with the role ROLECOURSEADMIN can use the user-utils endpoint to create new users not including the role ROLEADMIN. ROLECOURSEADMIN is a non-standard role in Opencast which is referenced neither in the documentation nor in any code except for tests but only i...