What is CVE-2021-4021?

CVE-2021-4021 is a high-severity vulnerability in Radare Radare2, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2022-02-24.

How severe is CVE-2021-4021?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Radare Radare2

CVE-2021-4021

A vulnerability was found in Radare2 in versions prior to 5.6.2, 5.6.0, 5.5.4 and 5.5.2. Mapping a huge section filled with zeros of an ELF64 binary for MIPS architecture can lead to uncontrolled resource consumption and DoS.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.010 (60.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Radare Radare2
N/a Radare2 — versions radare2 5.6.2, radare2 5.6.0, radare2 5.5.4 and radare2 5.5.2

Weakness classification (CWE)

References

patrick@puiterwijk.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2021-4021?: CVE-2021-4021 is a high-severity vulnerability in Radare Radare2, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2022-02-24.
How severe is CVE-2021-4021?: High severity. CVSS v3 base score is 7.5 out of 10.