Vulnerability CVE-2018-12248
Published: 2018-06-12

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.

Type:

CWE-125

 (Out-of-bounds Read)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Mruby -> Mruby 

 References:
https://github.com/mruby/mruby/commit/778500563a9f7ceba996937dc886bd8cde29b42b
https://github.com/mruby/mruby/issues/4038
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