CVE-2021-43518 Memory corruption in n/a

What is CVE-2021-43518?

CVE-2021-43518 is a high-severity memory corruption vulnerability in Fedoraproject Fedora, published on 15 Dec 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Teeworlds up to and including 0.7.5 is vulnerable to Buffer Overflow. A map parser does not validate m_Channels value coming from a map file, leading to a buffer overflow. A malicious server may offer a specially crafted map that will overwrite client's stack causing denial of service or code execution.

Weakness: CWE-120

Which versions are affected by CVE-2021-43518?

It affects 2 products.

Products include Fedoraproject Fedora, Teeworlds Teeworlds.

How do I fix CVE-2021-43518?

Upgrade to a fixed version.

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

Is CVE-2021-43518 being exploited?

There is no known exploitation of CVE-2021-43518 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-2021-43518, GHSA-53xw-cwmg-3m36, MGASA-2022-0292, UBUNTU-CVE-2021-43518.