CVE-2018-12249
HIGHCVSS 7.5/10EPSS 2.12%
Last modified
CVE-2018-12249 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in mruby 1.4.1. There is a NULL pointer dereference in mrb_class_real because "class BasicObject" is not properly supported in class.c.. EPSS estimates a 2.12% chance of exploitation in the next 30 days.
Description
An issue was discovered in mruby 1.4.1. There is a NULL pointer dereference in mrb_class_real because "class BasicObject" is not properly supported in class.c.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mruby | Mruby | 1.4.1 |
| Debian | Debian Linux | 9.0 |
References
- https://github.com/mruby/mruby/commit/faa4eaf6803bd11669bc324b4c34e7162286bfa3Patch, Third Party Advisory
- https://github.com/mruby/mruby/issues/4037Exploit, Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/05/msg00006.htmlMailing List, Third Party Advisory
- https://github.com/mruby/mruby/commit/faa4eaf6803bd11669bc324b4c34e7162286bfa3Patch, Third Party Advisory
- https://github.com/mruby/mruby/issues/4037Exploit, Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/05/msg00006.htmlMailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-12249?
An issue was discovered in mruby 1.4.1. There is a NULL pointer dereference in mrb_class_real because "class BasicObject" is not properly supported in class.c.
How severe is CVE-2018-12249?
CVE-2018-12249 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.12% probability of exploitation in the next 30 days.
How do I fix CVE-2018-12249?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2018-12249?
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Scan your code nowSource: NVD / NIST