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CVE-2023-39534— Malformed GAP submessage triggers assertion failure

Quick assessment

Affected
eProsima Fast-DDS
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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，该漏洞源于格式错误的 GAP 子消息可能会触发断言失败，从而导致 FastDDS 崩溃。

CVSS 7.5 · High EPSS 1.04% · P63

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-39534

Vulnerability Information
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Vulnerability Title
Malformed GAP submessage triggers assertion failure
Source: CVE Program / CVE List V5
Vulnerability Description
eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.10.0, 2.9.2, and 2.6.5, a malformed GAP submessage can trigger assertion failure, crashing FastDDS. Version 2.10.0, 2.9.2, and 2.6.5 contain a patch for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可达断言
Source: CVE Program / CVE List V5
Vulnerability Title
eProsima Fast DDS 安全漏洞
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，该漏洞源于格式错误的 GAP 子消息可能会触发断言失败，从而导致 FastDDS 崩溃。
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

Vendor Product Affected Versions CPE Subscribe
eProsima Fast-DDS < 2.6.5 -

II. Public POCs for CVE-2023-39534

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 14553 chars
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POC zip download
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III. Intelligence Information for CVE-2023-39534

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Vendor Advisories for CVE-2023-39534 (2)

Other References for CVE-2023-39534 (3)

Same Patch Batch · eProsima · 2023-08-11 · 6 CVEs total

CVE-2023-39947 8.2 HIGH Another heap overflow in push_back_helper
CVE-2023-39946 8.2 HIGH Heap overflow in push_back_helper due to a CDR message
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

IV. Related Vulnerabilities

Same product: Fast-DDS
Same vendor: eProsima
Same weakness: CWE-617

V. Comments for CVE-2023-39534

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