CVE-2021-3673 Denial of service in radare2

What is CVE-2021-3673?

CVE-2021-3673 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 2 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability was found in Radare2 in version 5.3.1. Improper input validation when reading a crafted LE binary can lead to resource exhaustion and DoS.

Weakness: CWE-252, CWE-20

Which versions are affected by CVE-2021-3673?

It affects 2 products.

Products include Fedoraproject Fedora, Radare Radare2.

How do I fix CVE-2021-3673?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2021-3673 being exploited?

There is no known exploitation of CVE-2021-3673 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 GHSA-45j6-6fww-gqv4, UBUNTU-CVE-2021-3673.