CVE-2023-39948: Uncaught fastcdr exception (Unexpected CDR type received) crashing fastdds
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 2.10.0 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.
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 | =2.10.0-rc1 | |
| Debian Debian Linux | =11.0 | |
| Debian Debian Linux | =12.0 | |
| >=2.6.0<2.6.5 | ||
| =2.10.0-rc1 | ||
| =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://github.com/eProsima/Fast-DDS/files/11117197/fastdds-assert.pcap.zip
- https://github.com/eProsima/Fast-DDS/issues/3422
- https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-x9pj-vrgf-f68f
- https://www.debian.org/security/2023/dsa-5481
- https://launchpad.net/bugs/cve/CVE-2023-39948
- https://github.com/eProsima/Fast-DDS/commit/d3db7244df4081ae630dea98b7b27eb96245d562
- https://security-tracker.debian.org/tracker/CVE-2023-39948
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-39948
- https://ubuntu.com/security/notices/USN-6306-1
- https://nvd.nist.gov/vuln/detail/CVE-2023-39948
- https://ubuntu.com/security/CVE-2023-39948
Frequently Asked Questions
What is CVE-2023-39948?
CVE-2023-39948 is a vulnerability in eprosima Fast DDS that can remotely crash any Fast DDS process prior to versions 2.10.0 and 2.6.5.
How severe is CVE-2023-39948?
CVE-2023-39948 has a severity rating of 7.5 (High).
Which software versions are affected by CVE-2023-39948?
CVE-2023-39948 affects eprosima Fast DDS versions prior to 2.10.0 and 2.6.5.
How can CVE-2023-39948 be exploited?
CVE-2023-39948 can be exploited remotely to crash any Fast DDS process.
How can I fix CVE-2023-39948?
To fix CVE-2023-39948, it is recommended to update to version 2.10.0 or 2.6.5 of eprosima Fast DDS.
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