Double Free in mruby - CVE-2020-36401
Published: July 5, 2021
Vulnerability identifier: #VU54556
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-36401
CWE-ID: CWE-415
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the mrb_default_allocf function in mruby. A remote attacker can pass specially crafted data to the application, trigger double free error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
mruby
Arch Linux
Arch Linux
How to mitigate CVE-2020-36401
Install updates from vendor's website.
mruby - update to 3.0.0