What is CVE-2018-10191?

CVE-2018-10191 is a vulnerability in the mruby software, versions up to and including 1.4.0, that allows an attacker to execute arbitrary code through a use-after-free issue caused by an integer overflow.

How severe is CVE-2018-10191?

CVE-2018-10191 has a severity rating of 9.8 out of 10, indicating a critical vulnerability.

Which software versions are affected by CVE-2018-10191?

Versions up to and including 1.4.0 of mruby and Debian Linux 9.0 are affected by CVE-2018-10191.

How can an attacker exploit CVE-2018-10191?

An attacker who can execute Ruby code can exploit CVE-2018-10191 by causing an integer overflow in the handling of OP_GETUPVAR, leading to a use-after-free vulnerability and potentially allowing execution of arbitrary code.

Are there any references available for CVE-2018-10191?

Yes, you can find references for CVE-2018-10191 in the following links: [link1], [link2], [link3].

Vulnerability/
CVE-2018-10191

critical

9.8

CWE

190 416

17/4/2018

5/8/2024

CVE-2018-10191: Integer Overflow

First published: Tue Apr 17 2018(Updated: )

In versions of mruby up to and including 1.4.0, an integer overflow exists in src/vm.c::mrb_vm_exec() when handling OP_GETUPVAR in the presence of deep scope nesting, resulting in a use-after-free. An attacker that can cause Ruby code to be run can use this to possibly execute arbitrary code.

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
Mruby Mruby	<=1.4.0
Debian Debian Linux	=9.0

Remedy

https://github.com/mruby/mruby/commit/1905091634a6a2925c911484434448e568330626

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Reference Links

Frequently Asked Questions

What is CVE-2018-10191?
CVE-2018-10191 is a vulnerability in the mruby software, versions up to and including 1.4.0, that allows an attacker to execute arbitrary code through a use-after-free issue caused by an integer overflow.
How severe is CVE-2018-10191?
CVE-2018-10191 has a severity rating of 9.8 out of 10, indicating a critical vulnerability.
Which software versions are affected by CVE-2018-10191?
Versions up to and including 1.4.0 of mruby and Debian Linux 9.0 are affected by CVE-2018-10191.
How can an attacker exploit CVE-2018-10191?
An attacker who can execute Ruby code can exploit CVE-2018-10191 by causing an integer overflow in the handling of OP_GETUPVAR, leading to a use-after-free vulnerability and potentially allowing execution of arbitrary code.
Are there any references available for CVE-2018-10191?
Yes, you can find references for CVE-2018-10191 in the following links: [link1], [link2], [link3].

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agent/description
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agent/softwarecombine
agent/first-publish-date
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collector/mitre-cve
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vendor/mruby
canonical/mruby mruby
version/mruby mruby/1.4.0
vendor/debian
canonical/debian debian linux
version/debian debian linux/9.0

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