CVE-2023-39946— Heap overflow in push_back_helper due to a CDR message
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I. Basic Information for CVE-2023-39946
Vulnerability Information
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Vulnerability Title
Heap overflow in push_back_helper due to a CDR message
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
堆缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
eProsima Fast DDS 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
eProsima Fast DDS是eProsima公司的OMG（对象管理组）DDS（数据分发服务）标准的 C++ 实现。 eProsima Fast DDS 2.9.1版本存在安全漏洞，该漏洞源于通过提供包含长度大于实际内容大小的 CDR 字符串的 PID_PROPERTY_LIST 参数，可以导致堆溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-39946
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- https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-j297-rg6j-m7hxx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2023-39946
Same Patch Batch · eProsima · 2023-08-11 · 6 CVEs total
| CVE-2023-39947 | 8.2 HIGH | Another heap overflow in push_back_helper |
| CVE-2023-39945 | 8.2 HIGH | Malformed serialized data in a data submessage leads to unhandled exception |
| CVE-2023-39949 | 7.5 HIGH | Improper validation of sequence numbers leading to remotely reachable assertion failure |
| CVE-2023-39948 | 7.5 HIGH | Uncaught fastcdr exception (Unexpected CDR type received) crashing fastdds |
| CVE-2023-39534 | 7.5 HIGH | Malformed GAP submessage triggers assertion failure |
IV. Related Vulnerabilities
Same product: Fast-DDS
- CVE-2025-64438
Fast-DDS: Unbounded GAP range triggers OOM DoS under RELIABL - CVE-2025-64098
FastDDS has Out-of-memory in readOctetVector via Manipulated - CVE-2025-62799
FastDDS's heap buffer overflow in RTPS DATA_FRAG enables una - CVE-2025-62603
FastDDS has Out-of-memory while parsing GenericMessage when - CVE-2025-62602
FastDDS has heap buffer overflow in readData via Manipulated
Same vendor: eProsima
- CVE-2025-64438
Fast-DDS: Unbounded GAP range triggers OOM DoS under RELIABL - CVE-2025-64098
FastDDS has Out-of-memory in readOctetVector via Manipulated - CVE-2025-62799
FastDDS's heap buffer overflow in RTPS DATA_FRAG enables una - CVE-2025-62603
FastDDS has Out-of-memory while parsing GenericMessage when - CVE-2025-62602
FastDDS has heap buffer overflow in readData via Manipulated
Same weakness: CWE-122
- CVE-2026-8261
Squirrel sqobject.cpp Load heap-based overflow - CVE-2026-8213
OSGeo gdal Grid File GDapi.c GDSDfldsrch heap-based overflow - CVE-2026-8212
OSGeo gdal SWapi.c SWSDfldsrch heap-based overflow - CVE-2026-42309
Pillow: Heap buffer overflow with nested list coordinates - CVE-2026-45130
Vim: Heap Buffer Overflow in spell file loading
V. Comments for CVE-2023-39946
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