ASA-202107-10 log generated external raw
[ASA-202107-10] mruby: arbitrary code execution |
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Arch Linux Security Advisory ASA-202107-10
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Severity: Medium
Date : 2021-07-01
CVE-ID : CVE-2020-36401
Package : mruby
Type : arbitrary code execution
Remote : Yes
Link : https://security.archlinux.org/AVG-2116
Summary
=======
The package mruby before version 3.0.0-1 is vulnerable to arbitrary
code execution.
Resolution
==========
Upgrade to 3.0.0-1.
# pacman -Syu "mruby>=3.0.0-1"
The problem has been fixed upstream in version 3.0.0.
Workaround
==========
None.
Description
===========
mruby 2.1.2 has a double free in mrb_default_allocf (called from
mrb_free and obj_free).
Impact
======
An attacker could execute arbitrary code through a use after free.
References
==========
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/mruby/OSV-2020-744.yaml
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23801
https://github.com/mruby/mruby/commit/97319697c8f9f6ff27b32589947e1918e3015503
https://security.archlinux.org/CVE-2020-36401
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