CVE-2018-12247
UnknownEPSS 1.55%
Last modified
CVE-2018-12247 is a vulnerability of currently unknown severity. 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).. EPSS estimates a 1.55% 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, 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).
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mruby | Mruby | 1.4.1 |
References
- https://github.com/mruby/mruby/commit/55edae0226409de25e59922807cb09acb45731a2Patch, Third Party Advisory
- https://github.com/mruby/mruby/issues/4036Issue Tracking, Third Party Advisory
- https://github.com/mruby/mruby/commit/55edae0226409de25e59922807cb09acb45731a2Patch, Third Party Advisory
- https://github.com/mruby/mruby/issues/4036Issue Tracking, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-12247?
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).
How severe is CVE-2018-12247?
Severity scoring for CVE-2018-12247 is pending analysis. The EPSS model estimates a 1.55% probability of exploitation in the next 30 days.
How do I fix CVE-2018-12247?
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.
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Are you affected by CVE-2018-12247?
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Scan your code nowSource: NVD / NIST