10.0
CRITICAL
CVE-2021-32494
Radare2 Mach-O Parser Division by Zero Dos Vulnerability
Description

Radare2 has a division by zero vulnerability in Mach-O parser's rebase_buffer function. This allow attackers to create malicious inputs that can cause denial of service.

INFO

Published Date :

July 7, 2023, 7:15 p.m.

Last Modified :

July 13, 2023, 6:37 p.m.

Remotely Exploitable :

Yes !

Impact Score :

6.0

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-32494 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Radare radare2
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-32494.

URL Resource
https://github.com/radareorg/radare2/commit/a07dedb804a82bc01c07072861942dd80c6b6d62 Patch Vendor Advisory
https://github.com/radareorg/radare2/issues/18667 Exploit Issue Tracking Patch Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-32494 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-32494 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Jul. 13, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://github.com/radareorg/radare2/commit/a07dedb804a82bc01c07072861942dd80c6b6d62 No Types Assigned https://github.com/radareorg/radare2/commit/a07dedb804a82bc01c07072861942dd80c6b6d62 Patch, Vendor Advisory
    Changed Reference Type https://github.com/radareorg/radare2/issues/18667 No Types Assigned https://github.com/radareorg/radare2/issues/18667 Exploit, Issue Tracking, Patch, Vendor Advisory
    Added CWE NIST CWE-369
    Added CPE Configuration OR *cpe:2.3:a:radare:radare2:5.3.0:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-32494 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-32494 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.09 }} 0.01%

score

0.39870

percentile

CVSS31 - Vulnerability Scoring System
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