PT-2022-3763 · Mruby · Mruby

Published 2022-05-20 · Updated 2022-06-08 · CVE-2022-1934

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions mruby versions prior to 3.2

Description The issue is related to a Use After Free condition in the mruby interpreter, specifically affecting the hash new from values() function. This condition can lead to memory being accessed after it has been freed, potentially allowing an attacker to cause a denial of service or execute arbitrary code.

Recommendations For versions prior to 3.2, update to version 3.2 or later to resolve the issue. At the moment, there is no information about other mitigation measures for this vulnerability.

Exploit

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2022-04553

CVE-2022-1934

Affected Products

Mruby

References · 13

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/1xxx/CVE-2022-1934.json · Exploit
• 🔥 https://huntr.dev/bounties/99e6df06-b9f7-4c53-a722-6bb89fbfb51f · Exploit
• https://github.com/mruby/mruby/commit/aa7f98dedb68d735a1665d3a289036c88b0c47ce · Patch
• https://ubuntu.com/security/CVE-2022-1934 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-1934 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-1934 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-1934 · Security Note
• https://cve.org/CVERecord?id=CVE-2022-1934 · Security Note
• https://bdu.fstec.ru/vul/2022-04553 · Security Note
• https://t.me/cvenotify/30895 · Telegram Post
• https://t.me/cvenotify/31314 · Telegram Post
• https://vuldb.com/ru/?ctiid.200907 · Note
• https://t.me/cibsecurity/43558 · Telegram Post