CVE-2023-42459 Malformed DATA submessage leads to bad-free error in Fast-DDS
Remote attackers can crash Fast-DDS processes or potentially execute code by sending malformed DATA submessages to discovery locators.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-42459?
CVE-2023-42459 is a high-severity use after free vulnerability in eProsima Fast-DDS, published on 16 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group). In affected versions specific DATA submessages can be sent to a discovery locator which may trigger a free error. This can remotely crash any Fast-DDS process. The call to free() could potentially leave the pointer in the attackers control which could lead to a double free. This issue has been addressed in versions 2.12.0, 2.11.3, 2.10.3, and 2.6.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Which versions are affected by CVE-2023-42459?
It affects 1 product.
Products include Eprosima Fast Dds.
How do I fix CVE-2023-42459?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2023-42459 being exploited?
There is no known exploitation of CVE-2023-42459 in the wild and no public exploit code.
Other vulnerabilities in eProsima Fast-DDS
- CVE-2025-67108 Security feature bypass in n/a
- CVE-2024-28231 Manipulated DATA Submessage causes a heap-buffer-overflow error
- CVE-2023-50716 Invalid DATA_FRAG Submessage causes a bad-free error
- CVE-2023-50257 Disconnect Vulnerability in RTPS Packets Used by SROS2
- CVE-2024-30258 FastDDS crash when publisher send malformed packet
Sources
Also known as DEBIAN-CVE-2023-42459, DSA-5568-1, GHSA-gq8g-fj58-22gm, UBUNTU-CVE-2023-42459.