Buffer overflow in Eprosima Fast-Dds
CVE-2023-39946
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.
Vulnerability class: Buffer Overflow
EPSS: 0.009 (56.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.
Affected products
- Eprosima Fast-dds — versions < 2.6.6, >= 2.7.0, < 2.9.2, >= 2.10.0, < 2.10.2
- Eprosima Fast_dds — versions 2.11.0
- Debian Debian_linux — versions 11.0, 12.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (Third Party Advisory)
Frequently asked questions
- What is CVE-2023-39946?
- CVE-2023-39946 is a high-severity vulnerability in Eprosima Fast-Dds, classified under Heap-based Buffer Overflow. CVSS score: 8.2/10. Published 2023-08-11.
- How severe is CVE-2023-39946?
- High severity. CVSS v3 base score is 8.2 out of 10.
- Is CVE-2023-39946 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.