Is CVE-2023-39945 in the CISA KEV catalog?

No. CVE-2023-39945 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-39945?

CVE-2023-39945 has a CVSS v3 base score of 8.2 (HIGH).

What is the EPSS score for CVE-2023-39945?

CVE-2023-39945 has an EPSS score of 0.81% (52th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-39945?

Upgrade fastdds on debian 11 to 2.1.0+ds-9+deb11u1 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2023-39945

HIGH

8.2

CVSS v3

NVD

Description

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.

CWE-248

How to fix

Remediation Available

fastddsDebian

Fixed in:2.1.0+ds-9+deb11u1CVE-2023-39945

Fixed in:2.9.1+ds-1+deb12u1CVE-2023-39945

Fixed in:2.10.1+ds-3CVE-2023-39945

fastddsUbuntu

Fixed in:2.5.0+ds-3ubuntu0.1~esm1USN-6306-1

Fixed in:2.9.1+ds-1ubuntu0.1USN-6306-1

fastdds-toolsUbuntu

Fixed in:2.5.0+ds-3ubuntu0.1~esm1USN-6306-1

Fixed in:2.9.1+ds-1ubuntu0.1USN-6306-1

libfastrtps2.5Ubuntu

Fixed in:2.5.0+ds-3ubuntu0.1~esm1USN-6306-1

libfastrtps2.9Ubuntu

Fixed in:2.9.1+ds-1ubuntu0.1USN-6306-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Exploit Intelligence

0.81%probability of exploitation in 30 days

52ndpercentile

Moderate risk: more likely to be exploited than 52% of all known CVEs.

References

Third-Party Advisory4

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.