CVE-2023-39945

moderate-risk
Published 2023-08-11

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.11.0, 2.10.2, 2.9.2, and 2.6.5, a data submessage sent to PDP port raises unhandled `BadParamException` in fastcdr, which in turn crashes fastdds. Versions 2.11.0, 2.10.2, 2.9.2, and 2.6.5 contain a patch for this issue.

Do I need to act?

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0.11% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.2/10 High
NETWORK / LOW complexity

Affected Products (3)

Affected Vendors

Debian Eprosima

References (8)

Third Party Advisory https://bombshell.gtisc.gatech.edu/ddsfuzz/pcap/fastdds-exception-20230509-02.pc...
Third Party Advisory https://github.com/eProsima/Fast-CDR/blob/v1.0.26/src/cpp/Cdr.cpp#L72-L79
Third Party Advisory https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-2rq6-8j7x-frr9
Third Party Advisory https://www.debian.org/security/2023/dsa-5481
Third Party Advisory https://bombshell.gtisc.gatech.edu/ddsfuzz/pcap/fastdds-exception-20230509-02.pc...
Third Party Advisory https://github.com/eProsima/Fast-CDR/blob/v1.0.26/src/cpp/Cdr.cpp#L72-L79
Third Party Advisory https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-2rq6-8j7x-frr9
Third Party Advisory https://www.debian.org/security/2023/dsa-5481
37
/ 100
moderate-risk
Severity 28/34 · Critical
Exploitability 0/34 · Minimal
Exposure 9/34 · Low