eProsima Fast-DDS SecurityManager.cpp on_process_handshake access control

Summaryinfo

A vulnerability has been found in eProsima Fast-DDS and classified as critical. The affected element is the function on_process_handshake of the file SecurityManager.cpp. The manipulation leads to access control. This vulnerability is uniquely identified as CVE-2023-50257. The attack can only be initiated within the local network. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in eProsima Fast-DDS (the affected version unknown). This issue affects the function on_process_handshake of the file SecurityManager.cpp. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

eProsima Fast DDS (formerly Fast RTPS) is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Even with the application of SROS2, due to the issue where the data (`p[UD]`) and `guid` values used to disconnect between nodes are not encrypted, a vulnerability has been discovered where a malicious attacker can forcibly disconnect a Subscriber and can deny a Subscriber attempting to connect. Afterwards, if the attacker sends the packet for disconnecting, which is data (`p[UD]`), to the Global Data Space (`239.255.0.1:7400`) using the said Publisher ID, all the Subscribers (Listeners) connected to the Publisher (Talker) will not receive any data and their connection will be disconnected. Moreover, if this disconnection packet is sent continuously, the Subscribers (Listeners) trying to connect will not be able to do so. Since the initial commit of the `SecurityManager.cpp` code (`init`, `on_process_handshake`) on Nov 8, 2016, the Disconnect Vulnerability in RTPS Packets Used by SROS2 has been present prior to versions 2.13.0, 2.12.2, 2.11.3, 2.10.3, and 2.6.7.

The weakness was disclosed 02/20/2024 as GHSA-v5r6-8mvh-cp98. The advisory is shared at github.com. The identification of this vulnerability is CVE-2023-50257 since 12/05/2023. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading eliminates this vulnerability. Applying the patch 072cbc9d6a71d869a5cbed1873c0cdd6cf67cda4 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• eProsima

Name

• Fast-DDS

License

• open-source

Website

• Product: https://github.com/eProsima/Fast-DDS/

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CPE 2.2info

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