High severity · published Feb 24, 2022
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
7.5
CVSS
1.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RA
Radare2 · Radare
through 5.5.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-4021
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-4021
Exploit
https://github.com/radareorg/radare2/issues/19436
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