CVE-2023-39945: Malformed serialized data in a data submessage leads to unhandled exception
First published: Fri Aug 11 2023(Updated: )
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.
Credit: security-advisories@github.com security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ubuntu/fastdds | <2.10.1+ | 2.10.1+ |
| ubuntu/fastdds | <2.5.0+ | 2.5.0+ |
| ubuntu/fastdds | <2.9.1+ | 2.9.1+ |
| eprosima Fast DDS | >=2.6.0<2.6.5 | |
| eprosima Fast DDS | >=2.9.0<2.9.2 | |
| eprosima Fast DDS | >=2.10.0<2.10.2 | |
| Debian Debian Linux | =11.0 | |
| Debian Debian Linux | =12.0 | |
| >=2.6.0<2.6.5 | ||
| >=2.9.0<2.9.2 | ||
| >=2.10.0<2.10.2 | ||
| =11.0 | ||
| =12.0 | ||
| debian/fastdds | 2.1.0+ds-9+deb11u1 2.9.1+ds-1+deb12u2 2.11.2+ds-6 |
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Reference Links
- https://bombshell.gtisc.gatech.edu/ddsfuzz/pcap/fastdds-exception-20230509-02.pcap
- https://github.com/eProsima/Fast-CDR/blob/v1.0.26/src/cpp/Cdr.cpp#L72-L79
- https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-2rq6-8j7x-frr9
- https://www.debian.org/security/2023/dsa-5481
- https://launchpad.net/bugs/cve/CVE-2023-39945
- https://github.com/eProsima/Fast-DDS/issues/3422
- https://github.com/eProsima/Fast-DDS/commit/d3db7244df4081ae630dea98b7b27eb96245d562
- https://security-tracker.debian.org/tracker/CVE-2023-39945
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-39945
- https://ubuntu.com/security/notices/USN-6306-1
- https://nvd.nist.gov/vuln/detail/CVE-2023-39945
- https://ubuntu.com/security/CVE-2023-39945
Frequently Asked Questions
What is CVE-2023-39945?
CVE-2023-39945 is a vulnerability in eprosima Fast DDS that allows a data submessage sent to the PDP port to raise an unhandled BadParamException, leading to a crash.
What is the severity of CVE-2023-39945?
CVE-2023-39945 has a severity value of 7.5, which is considered high.
Which versions of eprosima Fast DDS are affected by CVE-2023-39945?
Versions 2.6.0 to 2.6.5, 2.9.0 to 2.9.2, and 2.10.0 to 2.10.2 of eprosima Fast DDS are affected by CVE-2023-39945.
How can I fix CVE-2023-39945?
To fix CVE-2023-39945, make sure to update to version 2.11.0 or later of eprosima Fast DDS.
Is Debian Linux affected by CVE-2023-39945?
Yes, Debian Linux 11.0 and 12.0 are affected by CVE-2023-39945.
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