CVE-2021-21897 Memory corruption in Ribbonsoft

What is CVE-2021-21897?

CVE-2021-21897 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 8 Sep 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A code execution vulnerability exists in the DL_Dxf::handleLWPolylineData functionality of Ribbonsoft dxflib 3.17.0. A specially-crafted .dxf file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Weakness: CWE-787, CWE-191

Which versions are affected by CVE-2021-21897?

It affects 4 products.

Products include Debian Debian Linux, Fedoraproject Extra Packages for Enterprise Linux, Fedoraproject Fedora, Ribbonsoft Dxflib.

How do I fix CVE-2021-21897?

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-2021-21897 being exploited?

There is no known exploitation of CVE-2021-21897 in the wild and no public exploit code.

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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-2021-21897, DLA-3046-1, GHSA-ghgg-v38h-7v7m, UBUNTU-CVE-2021-21897, openSUSE-SU-2024:10730-1.