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CVE-2018-12247

7.5 · HIGH

An issue was discovered in mruby 1.4.1.

Published Jun 12, 2018CWE-476EPSS 1.51%

Overview

CVE-2018-12247 is a high-severity vulnerability. It was published on June 12, 2018 and has a CVSS 3.0 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

An issue was discovered in mruby 1.4.1. There is a NULL pointer dereference in mrb_class, related to certain .clone usage, because mrb_obj_clone in kernel.c copies flags other than the MRB_FLAG_IS_FROZEN flag (e.g., the embedded flag).

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

GitHubgithub.com/mruby/mruby/commit/55edae0226409de25e59922807cb09acb45731a2GitHubgithub.com/mruby/mruby/issues/4036GitHubgithub.com/mruby/mruby/commit/55edae0226409de25e59922807cb09acb45731a2GitHubgithub.com/mruby/mruby/issues/4036

How CyberStrike helps

Frequently asked questions

What is CVE-2018-12247?

CVE-2018-12247 is a high-severity vulnerability. It was published on June 12, 2018 and has a CVSS 3.0 base score of 7.5 (HIGH).

How severe is CVE-2018-12247?

This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-12247?

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-2018-12247?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-12247 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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