CVE-2018-12248

Description

An issue was discovered in mruby 1.4.1. There is a heap-based buffer over-read associated with OP_ENTER because mrbgems/mruby-fiber/src/fiber.c does not extend the stack in cases of many arguments to fiber.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.27%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/mruby/mruby/issues/4038 issue tracking third party advisory
https://github.com/mruby/mruby/commit/778500563a9f7ceba996937dc886bd8cde29b42b third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2018-12248?
CVE-2018-12248 has been scored as a high severity vulnerability.
How to fix CVE-2018-12248?
To fix CVE-2018-12248, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-12248 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-12248 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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