VulnerabilityModified

CVE-2021-44521

CRITICAL 9.1EPSS 55.0%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 55.0%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

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 3.1: 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS: 55.01% probability · 99th percentile
CISA KEV: Not listed
Weakness: CWE-94, CWE-732
Affected: apache/cassandra
Source: security@apache.org

References

http://www.openwall.com/lists/oss-security/2022/02/11/4Mailing List, Third Party Advisory
https://jfrog.com/blog/cve-2021-44521-exploiting-apache-cassandra-user-defined-functions-for-remote-code-execution/Exploit, Mitigation, Third Party Advisory
https://lists.apache.org/thread/y4nb9s4co34j8hdfmrshyl09lokm7356Issue Tracking, Mailing List, Vendor Advisory
https://security.netapp.com/advisory/ntap-20220225-0001/Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/02/11/4Mailing List, Third Party Advisory
https://jfrog.com/blog/cve-2021-44521-exploiting-apache-cassandra-user-defined-functions-for-remote-code-execution/Exploit, Mitigation, Third Party Advisory
https://lists.apache.org/thread/y4nb9s4co34j8hdfmrshyl09lokm7356Issue Tracking, Mailing List, Vendor Advisory
https://security.netapp.com/advisory/ntap-20220225-0001/Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.