CVE-2023-42459

Public Exploit
Malformed DATA submessage leads to bad-free error in Fast-DDS

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.

Category

8.6
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.18%
Vendor Advisory github.com
Affected: eProsima Fast-DDS
Published at:
Updated at:

References

Link Tags
https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-gq8g-fj58-22gm vendor advisory
https://github.com/eProsima/Fast-DDS/issues/3207 issue tracking exploit
https://github.com/eProsima/Fast-DDS/pull/3824 patch
https://www.debian.org/security/2023/dsa-5568 mailing list

Frequently Asked Questions

What is the severity of CVE-2023-42459?
CVE-2023-42459 has been scored as a high severity vulnerability.
How to fix CVE-2023-42459?
To fix CVE-2023-42459, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-42459 being actively exploited in the wild?
It is possible that CVE-2023-42459 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-42459?
CVE-2023-42459 affects eProsima Fast-DDS.
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