CVE-2023-39948 — eprosima Fast DDS is a C++ implementation of the Data Distribution Service stand

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.10.0 and 2.6.5, the `BadParamException` thrown by Fast CDR is not caught in Fast DDS. This can remotely crash any Fast DDS process. Versions 2.1

01What is this vulnerability?

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.10.0 and 2.6.5, the `BadParamException` thrown by Fast CDR is not caught in Fast DDS. This can remotely crash any Fast DDS process. Versions 2.10.0 and 2.6.5 contain a patch for this issue.

02Affected products

Vendor	Product	Versions
eProsima	Fast	DDS — < 2.6.5, >= 2.7.0, < 2.10.0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-08-11T13:51:38.871Z
• Last modified: 2025-02-13T17:03:18.153Z

09References

• github.com — https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-x9pj-vrgf-f68f
• github.com — https://github.com/eProsima/Fast-DDS/issues/3422
• github.com — https://github.com/eProsima/Fast-DDS/files/11117197/fastdds-assert.pcap.zip
• www.debian.org — https://www.debian.org/security/2023/dsa-5481