Critical severity · published Apr 17, 2018
CVE-2018-10191
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…
9.8
CVSS
2.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.6% · higher than 85% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0 · source: NVD
MR
Mruby · Mruby
through 1.4.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-10191
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-10191
Patch
https://github.com/mruby/mruby/commit/1905091634a6a2925c911484434448e568330626
Exploit
https://github.com/mruby/mruby/issues/3995
Mailing List
https://lists.debian.org/debian-lts-announce/2022/05/msg00006.html
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