eProsima Fast DDS prior 2.6.6/2.9.2/2.10.2/2.11.1 PID_PROPERTY_LIST heap-based overflow

Summaryinfo

A vulnerability, which was classified as critical, was found in eProsima Fast DDS. This issue affects some unknown processing. Such manipulation of the argument PID_PROPERTY_LIST leads to heap-based overflow. This vulnerability is documented as CVE-2023-39946. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in eProsima Fast DDS and classified as critical. Affected by this issue is some unknown functionality. The manipulation of the argument PID_PROPERTY_LIST with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. CVE summarizes:

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 weakness was released 08/11/2023 as GHSA-j297-rg6j-m7hx. The advisory is available at github.com. This vulnerability is handled as CVE-2023-39946 since 08/07/2023. Technical details are known, but there is no available exploit.

Upgrading to version 2.6.6, 2.9.2, 2.10.2 or 2.11.1 eliminates this vulnerability. Applying the patch 349227005827e8a67a0406b823138b5068cc47dc is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• eProsima

Name

• Fast DDS

License

• open-source

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