CVE-2023-50257

NameCVE-2023-50257
DescriptioneProsima 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1064515

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
fastdds (PTS)bullseye (security), bullseye2.1.0+ds-9+deb11u1vulnerable
bookworm, bookworm (security)2.9.1+ds-1+deb12u2vulnerable
sid2.11.2+ds-6.1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
fastddssource(unstable)(unfixed)1064515

Notes

[bookworm] - fastdds <no-dsa> (Minor issue)
[bullseye] - fastdds <no-dsa> (Minor issue)
https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-v5r6-8mvh-cp98
https://github.com/eProsima/Fast-DDS/commit/f2e5ceae8fbea0a6c9445a366faaca0b98a8ef86

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