CVE-2018-10191
Last modified
CVE-2018-10191 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 2.58% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mruby | Mruby | <= 1.4.0 |
| Debian | Debian Linux | 9.0 |
References
- https://github.com/mruby/mruby/commit/1905091634a6a2925c911484434448e568330626Patch, Third Party Advisory
- https://github.com/mruby/mruby/issues/3995Exploit, Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/05/msg00006.htmlMailing List, Third Party Advisory
- https://github.com/mruby/mruby/commit/1905091634a6a2925c911484434448e568330626Patch, Third Party Advisory
- https://github.com/mruby/mruby/issues/3995Exploit, Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/05/msg00006.htmlMailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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