{"id":"UBUNTU-CVE-2018-10191","details":"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.","modified":"2026-04-22T12:44:06.753630Z","published":"2018-04-17T21:29:00Z","upstream":["CVE-2018-10191"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-10191"},{"type":"REPORT","url":"https://github.com/mruby/mruby/commit/1905091634a6a2925c911484434448e568330626"},{"type":"REPORT","url":"https://github.com/mruby/mruby/issues/3995"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-10191"}],"affected":[{"package":{"name":"mruby","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/mruby@1.2.0+20160315+git4f20d58a-1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.0+20150817+gita1731254-1","1.1.0+20150906+git1cbbb7e1-1","1.2.0+20160315+git4f20d58a-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.2.0+20160315+git4f20d58a-1","binary_name":"mruby"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-10191.json"}},{"package":{"name":"mruby","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/mruby@1.4.0-1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0-1","1.3.0+20170925+git38185028-1","1.3.0+20171029+git77edafb0-1","1.4.0-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.4.0-1","binary_name":"mruby"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-10191.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}