PT-2023-27168 · Eprosima+2 · Eprosima Fast Dds+2

Squizz617 · Published 2023-08-11 · Updated 2023-08-24 · CVE-2023-39946

Positive Technologies (AI Summary)

CVSS v3.1

8.2

High

Base vector

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

Name of the Vulnerable Software and Affected Versions eprosima Fast DDS versions prior to 2.11.1 eprosima Fast DDS versions prior to 2.10.2 eprosima Fast DDS versions prior to 2.9.2 eprosima Fast DDS versions prior to 2.6.6

Description The issue is related to a heap overflow that can be triggered by providing a PID PROPERTY LIST parameter containing a CDR string with a length larger than the size of the actual content. This occurs in the eprosima::fastdds::dds::ParameterPropertyList t::push back helper function, where memcpy is called to copy the octet'ized length and then the data into properties .data. The data and size can be controlled by anyone sending the CDR string to the discovery multicast port, allowing for a remote crash of any Fast-DDS process.

Recommendations For versions prior to 2.11.1, update to version 2.11.1 or later. For versions prior to 2.10.2, update to version 2.10.2 or later. For versions prior to 2.9.2, update to version 2.9.2 or later. For versions prior to 2.6.6, update to version 2.6.6 or later. As a temporary workaround, consider restricting access to the discovery multicast port to minimize the risk of exploitation.

Exploit

Fix

Memory Corruption

Heap Based Buffer Overflow

Weakness Enumeration

CWE-787

CWE-122

Related Identifiers

CVE-2023-39946

DSA-5481-1

GHSA-J297-RG6J-M7HX

USN-6306-1

Affected Products

Linuxmint

Ubuntu

Eprosima Fast Dds

References · 24

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/39xxx/CVE-2023-39946.json · Exploit
• https://ubuntu.com/security/CVE-2023-39946 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-39946 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-39946 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-39946 · Security Note
• https://ubuntu.com/security/CVE-2023-39948 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-6306-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-39947 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-39949 · Vendor Advisory
• https://osv.dev/vulnerability/USN-6306-1 · Vendor Advisory
• https://debian.org/security/2023/dsa-5481 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-39946 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-39946 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-5481-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-39534 · Vendor Advisory