Vulnerability Name:

CVE-2018-10191 (CCN-142307)

Assigned:2018-04-11
Published:2018-04-11
Updated:2022-05-12
Summary: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 v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
7.3 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
6.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
7.5 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-190
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2018-10191

Source: XF
Type: UNKNOWN
mruby-cve201810191-integer-overflow(142307)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/mruby/mruby/commit/1905091634a6a2925c911484434448e568330626

Source: CCN
Type: mruby GIT Repository
Use after free caused by integer overflow in environment stack #3995

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://github.com/mruby/mruby/issues/3995

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20220506 [SECURITY] [DLA 2996-1] mruby security update

Vulnerable Configuration:Configuration 1:
  • cpe:/a:mruby:mruby:*:*:*:*:*:*:*:* (Version <= 1.4.0)

    • Configuration 2:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:mruby:mruby:1.4.0:*:*:*:*:ruby:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.xenial:def:2018101910000000
    V
    		CVE-2018-10191 on Ubuntu 16.04 LTS (xenial) - untriaged.
    2018-04-17
    oval:com.ubuntu.artful:def:201810191000
    V
    		CVE-2018-10191 on Ubuntu 17.10 (artful) - untriaged.
    2018-04-17
    oval:com.ubuntu.xenial:def:201810191000
    V
    		CVE-2018-10191 on Ubuntu 16.04 LTS (xenial) - untriaged.
    2018-04-17
    oval:com.ubuntu.disco:def:2018101910000000
    V
    		CVE-2018-10191 on Ubuntu 19.04 (disco) - untriaged.
    2018-04-17
    oval:com.ubuntu.bionic:def:201810191000
    V
    		CVE-2018-10191 on Ubuntu 18.04 LTS (bionic) - untriaged.
    2018-04-17
    oval:com.ubuntu.cosmic:def:2018101910000000
    V
    		CVE-2018-10191 on Ubuntu 18.10 (cosmic) - untriaged.
    2018-04-17
    oval:com.ubuntu.cosmic:def:201810191000
    V
    		CVE-2018-10191 on Ubuntu 18.10 (cosmic) - untriaged.
    2018-04-17
    oval:com.ubuntu.bionic:def:2018101910000000
    V
    		CVE-2018-10191 on Ubuntu 18.04 LTS (bionic) - untriaged.
    2018-04-17
    oval:com.ubuntu.trusty:def:201810191000
    V
    		CVE-2018-10191 on Ubuntu 14.04 LTS (trusty) - untriaged.
    2018-04-17
    BACK
    mruby mruby *
    debian debian linux 9.0
    mruby mruby 1.4.0