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CVE-2020-15866

Published: 21 July 2020

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.

Priority

Low

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
mruby
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

trusty Does not exist

upstream Needs triage

xenial Needs triage

hirsute Ignored
(end of life)
groovy Ignored
(end of life)
kinetic Ignored
(end of life, was needs-triage)
impish Ignored
(end of life)
jammy Needs triage

lunar Ignored
(end of life, was needs-triage)
mantic Needs triage

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H