CVE-2023-39947 Another heap overflow in push_back_helper

What is CVE-2023-39947?

CVE-2023-39947 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 11 Aug 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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, even after the fix at commit 3492270, malformed `PID_PROPERTY_LIST` parameters cause heap overflow at a different program counter. 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.

Weakness: CWE-787, CWE-122

Which versions are affected by CVE-2023-39947?

It affects 2 products.

Products include Debian Debian Linux, Eprosima Fast Dds.

How do I fix CVE-2023-39947?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-39947 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-39947 exists.

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All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2023-39947, GHSA-mf55-5747-c4pv, UBUNTU-CVE-2023-39947.