CVE-2020-15866

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.

CVSS v3.1

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

CVSS v2.0

7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS

2.09% chance of exploitation in the next 30 days, 80th percentile

Published

2020-07-21

Updated

2024-08-04

Proof-of-concept exploits (1)

• mruby/mruby/issues/5042

References

• CVE Record
• NVD entry

Related

• CVE-2018-10191
• CVE-2020-6838
• CVE-2020-6839
• CVE-2020-6840
• CVE-2021-46020
• CVE-2021-46023