CVE-2023-50257— eProsima Fast DDS 访问控制错误漏洞

Disconnect Vulnerability in RTPS Packets Used by SROS2

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.

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

访问控制不恰当

eProsima Fast DDS 访问控制错误漏洞

eProsima Fast DDS是eProsima公司的OMG（对象管理组）DDS（数据分发服务）标准的 C++ 实现。 eProsima Fast DDS 2.13.0、2.12.2、 2.11.3、2.10.3 和 2.6.7之前版本存在访问控制错误漏洞，该漏洞源于SROS2使用的RTPS数据包中的存在安全问题，攻击者利用该漏洞可以强行断开订阅者的连接并拒绝订阅者的连接。

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