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Vulnerability DatabaseCVE-2021-4021
CVE-2021-4021:
NixOS vulnerability analysis and mitigation
Overview
A vulnerability (CVE-2021-4021) was discovered in Radare2 versions prior to 5.6.2, 5.6.0, 5.5.4, and 5.5.2. The vulnerability was published on February 24, 2022, and involves a potential denial of service condition when analyzing ELF64 binaries for MIPS architecture (NVD).
Technical details
The vulnerability occurs when mapping a huge section filled with zeros of an ELF64 binary specifically for MIPS architecture. This can trigger uncontrolled resource consumption leading to a denial of service condition. The vulnerability has been assigned a CVSS v3.1 base score of 7.5 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (NVD, Rapid7).
Impact
When exploited, this vulnerability can cause uncontrolled resource consumption and denial of service (DoS) in affected Radare2 installations. The impact primarily affects the availability of the system, with no direct impact on confidentiality or integrity (NVD).
Mitigation and workarounds
Users should upgrade to Radare2 versions 5.6.2, 5.6.0, 5.5.4, or 5.5.2 or later to address this vulnerability (NVD).
Additional resources
Source: This report was generated using AI
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