PT-2020-19255 · Mruby · Mruby

Sleicasper · Published 2020-01-11 · Updated 2020-01-13 · CVE-2020-6838

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 version 2.1.0

Description A use-after-free issue exists in the hash values at function located in mrbgems/mruby-hash-ext/src/hash-ext.c.

Recommendations For mruby version 2.1.0, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2020-6838

Affected Products

Mruby

References · 9

• 🔥 https://github.com/mruby/mruby/issues/4926 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-6838 · Security Note
• https://cve.org/CVERecord?id=CVE-2020-6838 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-6838 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-6838 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-6838 · Vendor Advisory
• https://github.com/mruby/mruby/commit/70e574689664c10ed2c47581999cc2ce3e3c5afb · Note
• https://github.com/mruby/mruby/commit/fc8fb41451b07b3fda0726ba80e88e509ad02452 · Note
• https://github.com/mruby/mruby/commit/2742ded32fe18f88833d76b297f5c2170b6880c3 · Note