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)

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.011 (63.6th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-4021: held from 0.010 to 0.011.

EPSS over last 30 days · oldest: 0.010 · newest: 0.011 · change: +0.000

Affected products

  • Radare Radare2
  • Radare2 — versions radare2 5.6.2, radare2 5.6.0, radare2 5.5.4 and radare2 5.5.2

Weakness classification (CWE)

References

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.