CVE-2023-39948 json
Uncaught fastcdr exception (Unexpected CDR type received) crashing fastdds
published 2023-08-11 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-43646
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- eprosima fast_dds 2.6.5
- fastdds Debian 12 2.9.1+ds-1+deb12u1
- fastdds Debian 13 2.10.1+ds-2
debian advisories DEBIAN-CVE-2023-39948
- fastdds Ubuntu Pro 22.04 LTS 2.5.0+ds-3ubuntu0.1~esm1
ubuntu advisories UBUNTU-CVE-2023-39948
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
1.04% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
- eProsima Fast-DDS
Classification
- Weakness
-
- CWE-248 Uncaught Exception
References
-
github.com
/eProsima/Fast-DDS/security/advisories/GHSA-x9pj-vrgf-f68f
third-party-advisory
-
github.com
/eProsima/Fast-DDS/issues/3422
third-party-advisory
-
github.com
/eProsima/Fast-DDS/files/11117197/fastdds-assert.pcap.zip
third-party-advisory
-
debian.org
/security/2023/dsa-5481
third-party-advisory
Sources
- CVE List CVE-2023-39948
- NVD CVE-2023-39948
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