CVE-2023-39946

Summary

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.11.1, 2.10.2, 2.9.2, and 2.6.6, heap can be overflowed by providing a PID_PROPERTY_LIST parameter that contains a CDR string with length larger than the size of actual content. In eprosima::fastdds::dds::ParameterPropertyList_t::push_back_helper, memcpy is called to first copy the octet'ized length and then to copy the data into properties_.data. At the second memcpy, both data and size can be controlled by anyone that sends the CDR string to the discovery multicast port. This can remotely crash any Fast-DDS process. Versions 2.11.1, 2.10.2, 2.9.2, and 2.6.6 contain a patch for this issue.

Affected Software

Weaknesses

• CWE-122: CWE-122: Heap-based Buffer Overflow

ADP Enrichment

CVE Program Container

Additional References

• https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-j297-rg6j-m7hx
• https://github.com/eProsima/Fast-DDS/commit/349227005827e8a67a0406b823138b5068cc47dc
• https://www.debian.org/security/2023/dsa-5481

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: yes
  • Technical Impact: partial

References

• https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-j297-rg6j-m7hx
• https://github.com/eProsima/Fast-DDS/commit/349227005827e8a67a0406b823138b5068cc47dc
• https://www.debian.org/security/2023/dsa-5481

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