Published: 17/04/2018 Updated: 12/05/2022

CVSS v2 Base Score: 7.5 | Impact Score: 6.4 | Exploitability Score: 10

CVSS v3 Base Score: 9.8 | Impact Score: 5.9 | Exploitability Score: 3.9

VMScore: 668

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

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.

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mruby mruby
debian debian linux 9.0

Debian Bug report logs - #896020 mruby: CVE-2018-10191: Use after free caused by integer overflow in environment stack Package: src:mruby; Maintainer for src:mruby is Nobuhiro Iwamatsu <iwamatsu@debianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Wed, 18 Apr 2018 19:21:02 UTC Severity: grave Tags ...

Debian Bug report logs - #896021 mruby: CVE-2018-10199: Use after free in File#initilialize_copy Package: src:mruby; Maintainer for src:mruby is Nobuhiro Iwamatsu <iwamatsu@debianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Wed, 18 Apr 2018 19:33:02 UTC Severity: grave Tags: patch, security, ups ...

CWE-190 https://github.com/mruby/mruby/issues/3995 https://github.com/mruby/mruby/commit/1905091634a6a2925c911484434448e568330626 https://lists.debian.org/debian-lts-announce/2022/05/msg00006.html https://nvd.nist.gov https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=896020

CVE-2018-10191

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