PT-2021-6558 · Mruby · Mruby

Published 2021-06-30 · Updated 2021-07-06 · CVE-2020-36401

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions mruby versions 2.1.2

Description The issue is related to a double free vulnerability in the mrb default allocf function of the mruby interpreter. This vulnerability can be exploited by a remote attacker to access sensitive data, compromise data integrity, and cause a denial of service.

Recommendations For mruby version 2.1.2, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Double Free

Weakness Enumeration

CWE-415

Related Identifiers

BDU:2022-01823

CVE-2020-36401

Affected Products

Mruby

References · 11

• 🔥 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23801 · Exploit
• https://github.com/mruby/mruby/commit/97319697c8f9f6ff27b32589947e1918e3015503 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2020-36401 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-36401 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-36401 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2020-36401 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-01823 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-36401 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-36401 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-36401 · Vendor Advisory
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/mruby/OSV-2020-744.yaml · Note