Opencast is a free, open-source platform to support the management of educational audio and video content. Prior to Opencast 12.5, Opencast's Paella authentication page could be used to redirect to an arbitrary URL for authenticated users. The vulnerability allows attackers to redirect users to sites outside of one's Opencast install, potentially facilitating phishing attacks or other security issues. This issue is fixed in Opencast 12.5 and newer.
A NULL pointer dereference issue was discovered in the Linux kernel in io_files_update_with_index_alloc. A local user could use this flaw to potentially crash the system causing a denial of service.
A NULL pointer dereference issue was discovered in the Linux kernel in the MPTCP protocol when traversing the subflow list at disconnect time. A local user could use this flaw to potentially crash the system causing a denial of service.
A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing sk_user_data can lead to a race condition and NULL pointer dereference. A local user could use this flaw to potentially crash the system causing a denial of service.
This update resolves a multi-factor authentication bypass attack
UC-8100A-ME-T System Image: Versions v1.0 to v1.6, UC-2100 System Image: Versions v1.0 to v1.12, UC-2100-W System Image: Versions v1.0 to v 1.12, UC-3100 System Image: Versions v1.0 to v1.6, UC-5100 System Image: Versions v1.0 to v1.4, UC-8100 System Image: Versions v3.0 to v3.5, UC-8100-ME-T System Image: Versions v3.0 and v3.1, UC-8100A-ME-T System Image: Versions v1.0 to v1.6, UC-8200 System Image: v1.0 to v1.5, AIG-300 System Image: v1.0 to v1.4, UC-8410A with Debian 9 System Image: Versions v4.0.2 and
The user_id and device_id on the Ourphoto App version 1.4.1 /device/* end-points both suffer from insecure direct object reference vulnerabilities. Other end-users user_id and device_id values can be enumerated by incrementing or decrementing id numbers. The impact of this vulnerability allows an attacker to discover sensitive information such as end-user email addresses, and their unique frame_token value of all other Ourphoto App end-users.
The /device/signin end-point for the Ourphoto App version 1.4.1 discloses clear-text password information for functionality within the picture frame devices. The deviceVideoCallPassword and mqttPassword are returned in clear-text. The lack of sessions management and presence of insecure direct object references allows to return password information for other end-users devices. Many of the picture frame devices offer video calling, and it is likely this information can be used to abuse that functionality.
The user_token authorization header on the Ourphoto App version 1.4.1 /apiv1/* end-points is not implemented properly. Removing the value causes all requests to succeed, bypassing authorization and session management. The impact of this vulnerability allows an attacker POST api calls with other users unique identifiers and enumerate information of all other end-users.
The /device/acceptBind end-point for Ourphoto App version 1.4.1 does not require authentication or authorization. The user_token header is not implemented or present on this end-point. An attacker can send a request to bind their account to any users picture frame, then send a POST request to accept their own bind request, without the end-users approval or interaction.