CVE-2020-15866

Published: Jul 21, 2020Modified: Jun 17, 2026

9.8

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability: 3.9 / Impact: 5.9

Source: NVD

Description

mruby through 2.1.2-rc has a heap-based buffer overflow in the mrb_yield_with_class function in vm.c because of incorrect VM stack handling. It can be triggered via the stack_copy function.

Affected (3)

Products: Mruby: Mruby · Debian: Debian Linux

1 product

1 product

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Mruby Mruby	Up to 2.1.1
Mruby Mruby	Version 2.1.2 rc

Configuration B

1 vulnerable

Vulnerable Software	Affected Versions
Debian Debian Linux	Version 9.0

Related CWEs

CWE-787

Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

References (4)

https://github.com/mruby/mruby/issues/5042

Source: cve@mitre.org

ExploitThird Party Advisory

https://lists.debian.org/debian-lts-announce/2022/05/msg00006.html

Source: cve@mitre.org

Mailing ListThird Party Advisory

https://github.com/mruby/mruby/issues/5042

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party Advisory

https://lists.debian.org/debian-lts-announce/2022/05/msg00006.html

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

Timeline

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