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RubySecRUBY:MRUBY-2018-12248

HistoryJun 11, 2018 - 9:00 p.m.

Heap buffer overflow in OP_ENTER

2018-06-1121:00:00

RubySec

github.com

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.001

Percentile

41.6%

JSON

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

Affected configurations

Vulners

Node

rubymrubyRange≤2.0.0

VendorProductVersionCPE
rubymruby*cpe:2.3:a:ruby:mruby:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
ruby	mruby	*	cpe:2.3:a:ruby:mruby::::::::

References

github.com/mruby/mruby/issues/4038

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.001

Percentile

41.6%

JSON

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