CVE-2021-44521

Remote code execution for scripted UDFs

Severity Score

9.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

When running Apache Cassandra with the following configuration: enable_user_defined_functions: true enable_scripted_user_defined_functions: true enable_user_defined_functions_threads: false it is possible for an attacker to execute arbitrary code on the host. The attacker would need to have enough permissions to create user defined functions in the cluster to be able to exploit this. Note that this configuration is documented as unsafe, and will continue to be considered unsafe after this CVE.

Cuando es ejecutado Apache Cassandra con la siguiente configuración: enable_user_defined_functions: true enable_scripted_user_defined_functions: true enable_user_defined_functions_threads: false es posible que un atacante ejecute código arbitrario en el host. El atacante necesitaría tener suficientes permisos para crear funciones definidas por el usuario en el cluster para poder explotar esto. Tenga en cuenta que esta configuración está documentada como no segura, y seguirá siendo considerada no segura después de esta CVE

*Credits: This issue was discovered by Omer Kaspi of the JFrog Security vulnerability research team.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-12-02 CVE Reserved
2022-02-11 CVE Published
2022-02-24 First Exploit
2024-08-04 CVE Updated
2024-10-27 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-94: Improper Control of Generation of Code ('Code Injection')
CWE-732: Incorrect Permission Assignment for Critical Resource

CAPEC

References (6)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2022/02/11/4	Mailing List
https://security.netapp.com/advisory/ntap-20220225-0001	Third Party Advisory

URL	Date	SRC
https://github.com/WoodenKlaas/CVE-2021-44521	2022-02-24
https://github.com/Yeyvo/poc-CVE-2021-44521	2022-12-03
https://jfrog.com/blog/cve-2021-44521-exploiting-apache-cassandra-user-defined-functions-for-remote-code-execution	2024-08-04

URL	Date	SRC

URL	Date	SRC
https://lists.apache.org/thread/y4nb9s4co34j8hdfmrshyl09lokm7356	2022-08-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apache Search vendor "Apache"		Cassandra Search vendor "Apache" for product "Cassandra"				>= 3.0.0 < 3.0.26 Search vendor "Apache" for product "Cassandra" and version " >= 3.0.0 < 3.0.26"		-		Affected
Apache Search vendor "Apache"		Cassandra Search vendor "Apache" for product "Cassandra"				>= 3.11.0 < 3.11.12 Search vendor "Apache" for product "Cassandra" and version " >= 3.11.0 < 3.11.12"		-		Affected
Apache Search vendor "Apache"		Cassandra Search vendor "Apache" for product "Cassandra"				>= 4.0.0 < 4.0.2 Search vendor "Apache" for product "Cassandra" and version " >= 4.0.0 < 4.0.2"		-		Affected