CVE-2023-39946
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.89%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.89% probability · 57th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-122, CWE-787
- Affected
- eprosima/fast dds · debian/debian linux
- Source
- security-advisories@github.com
References
- https://github.com/eProsima/Fast-DDS/commit/349227005827e8a67a0406b823138b5068cc47dcThird Party Advisory
- https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-j297-rg6j-m7hxThird Party Advisory
- https://www.debian.org/security/2023/dsa-5481Third Party Advisory
- https://github.com/eProsima/Fast-DDS/commit/349227005827e8a67a0406b823138b5068cc47dcThird Party Advisory
- https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-j297-rg6j-m7hxThird Party Advisory
- https://www.debian.org/security/2023/dsa-5481Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.