CVE-2023-39946CWE-122

Heap overflow in push_back_helper due to a CDR message

High · published August 11, 2023

CVSS v3.1
8.2
EPSS
1%
Percentile
58.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.00889 · 58.9th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2023-08-11T13:37Z
EPSS history
Timeline
  • 11 AUG 13:37Z
    Heap overflow in push_back_helper due to a CDR message
    cvelistv5