CVE-2021-3756 Heap-based Buffer Overflow in hoene/libmysofa

What is CVE-2021-3756?

CVE-2021-3756 is a medium-severity memory corruption vulnerability in Fedoraproject Fedora, published on 29 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

libmysofa is vulnerable to Heap-based Buffer Overflow

Weakness: CWE-787, CWE-122

Which versions are affected by CVE-2021-3756?

It affects 2 products.

Products include Fedoraproject Fedora, Symonics Libmysofa.

How do I fix CVE-2021-3756?

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-2021-3756 being exploited?

There is no known exploitation of CVE-2021-3756 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2021-3756, GHSA-ph84-4hmc-hhqm, ROOT-OS-DEBIAN-11-CVE-2021-3756, UBUNTU-CVE-2021-3756, USN-5184-1, openSUSE-SU-2024:11673-1.