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CVE-2021-44521

Remote code execution for scripted UDFs

Published: Feb 11, 2022Updated: Nov 21, 2024 Sources: CVE List NVD GHSA BDUCWE-94
NVD MITRE
9.1CVSSCRITICAL
EPSS Score
54.9%
Top 1.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-94CWE-732

Affected Products

CassandraApache Software Foundation
On-premDatabase
Databases / nosql
Apache CassandraApache Software Foundation
Mixed
Web & CMS Plugins / cms-core
cassandraapache
On-premDatabase
Databases / nosql
org.apache.cassandra:cassandra-allMavenOSS Libraries
apache software foundationoss-projectUSWeb & CMS Pluginsaka apache foundation
apacheoss-projectUSWeb & CMS Pluginsaka apache http server, apache httpd
mavenpackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

3 techniques
Execution
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://nvd.nist.gov/vuln/detail/CVE-2021-44521
nvd.nist.gov
https://lists.apache.org/thread/y4nb9s4co34j8hdfmrshyl09lokm7356
lists.apache.org
https://jfrog.com/blog/cve-2021-44521-exploiting-apache-cassandra-user-defined-functions-for-remote-code-execution/
jfrog.com
and 7 more references View all →

Timeline

Published
Feb 11, 2022
Last Updated
Nov 21, 2024

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