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CVE-2021-42840

8.8 · HIGH

SuiteCRM before 7.11.19 allows remote code execution via the system settings Log File Name setting.

Published Oct 22, 2021CWE-434EPSS 58.60%

Overview

CVE-2021-42840 is a high-severity vulnerability. It was published on October 22, 2021 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

SuiteCRM before 7.11.19 allows remote code execution via the system settings Log File Name setting. In certain circumstances involving admin account takeover, logger_file_name can refer to an attacker-controlled PHP file under the web root, because only the all-lowercase PHP file extensions were blocked. NOTE: this issue exists because of an incomplete fix for CVE-2020-28328.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refpacketstormsecurity.com/files/165001/SuiteCRM-7.11.18-Remote-Code-Execution.htmlRefdocs.suitecrm.com/admin/releases/7.11.x/#_7_11_19GitHubgithub.com/rapid7/metasploit-framework/commits/master/modules/exploits/linux/http/suitecrm_log_file_rce.rbRefsuitecrm.com/time-to-upgrade-suitecrm-7-11-19-7-10-30-lts-released/Reftheyhack.me/SuiteCRM-RCE-2/Refpacketstormsecurity.com/files/165001/SuiteCRM-7.11.18-Remote-Code-Execution.htmlRefdocs.suitecrm.com/admin/releases/7.11.x/#_7_11_19GitHubgithub.com/rapid7/metasploit-framework/commits/master/modules/exploits/linux/http/suitecrm_log_file_rce.rbRefsuitecrm.com/time-to-upgrade-suitecrm-7-11-19-7-10-30-lts-released/Reftheyhack.me/SuiteCRM-RCE-2/

How CyberStrike helps

Frequently asked questions

What is CVE-2021-42840?

CVE-2021-42840 is a high-severity vulnerability. It was published on October 22, 2021 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2021-42840?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-42840?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-42840?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-42840 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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