PT-2020-14673 · Mruby · Mruby

Mathias Payer + 1 · Published 2020-07-21 · Updated 2022-05-12 · CVE-2020-15866

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions mruby versions prior to 2.1.2-rc

Description The issue is a heap-based buffer overflow in the mrb yield with class function, located in vm.c, due to incorrect VM stack handling. This can be triggered via the stack copy function.

Recommendations For versions prior to 2.1.2-rc, update to version 2.1.2-rc or later to resolve the issue.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2020-15866

DLA-2996-1

Affected Products

Mruby

References · 11

• 🔥 https://github.com/mruby/mruby/issues/5042 · Exploit
• https://cve.org/CVERecord?id=CVE-2020-15866 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-15866 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-15866 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-2996-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2020-15866 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-15866 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-15866 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-15866 · Security Note
• https://github.com/mruby/mruby/commit/6334949ba69363cb909a57d6871895bd6d98bb6b · Note
• https://lists.debian.org/debian-lts-announce/2022/05/msg00006.html · Note