Vulnerability Name:

CVE-2018-11743 (CCN-144375)

Assigned:2018-05-29
Published:2018-05-29
Updated:2022-05-12
Summary:The init_copy function in kernel.c in mruby 1.4.1 makes initialize_copy calls for TT_ICLASS objects, which allows attackers to cause a denial of service (mrb_hash_keys uninitialized pointer and application crash) or possibly have unspecified other impact.
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
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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): None
Integrity (I): None
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
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-824
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2018-11743

Source: XF
Type: UNKNOWN
mruby-cve201811743-dos(144375)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/mruby/mruby/commit/b64ce17852b180dfeea81cf458660be41a78974d

Source: CCN
Type: mruby GIT Repository
Use of uninitialized pointer in mrb_hash_keys #4027

Source: MISC
Type: Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/mruby/mruby/issues/4027

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:1.4.1:*:*:*:*:ruby:*:*

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

    • Configuration CCN 1:
  • cpe:/a:mruby:mruby:1.4.1:*:*:*:*:ruby:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.xenial:def:2018117430000000
    V
    		CVE-2018-11743 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-06-05
    oval:com.ubuntu.artful:def:201811743000
    V
    		CVE-2018-11743 on Ubuntu 17.10 (artful) - medium.
    2018-06-05
    oval:com.ubuntu.xenial:def:201811743000
    V
    		CVE-2018-11743 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-06-05
    oval:com.ubuntu.disco:def:2018117430000000
    V
    		CVE-2018-11743 on Ubuntu 19.04 (disco) - medium.
    2018-06-05
    oval:com.ubuntu.bionic:def:201811743000
    V
    		CVE-2018-11743 on Ubuntu 18.04 LTS (bionic) - medium.
    2018-06-05
    oval:com.ubuntu.cosmic:def:2018117430000000
    V
    		CVE-2018-11743 on Ubuntu 18.10 (cosmic) - medium.
    2018-06-05
    oval:com.ubuntu.cosmic:def:201811743000
    V
    		CVE-2018-11743 on Ubuntu 18.10 (cosmic) - medium.
    2018-06-05
    oval:com.ubuntu.bionic:def:2018117430000000
    V
    		CVE-2018-11743 on Ubuntu 18.04 LTS (bionic) - medium.
    2018-06-05
    oval:com.ubuntu.trusty:def:201811743000
    V
    		CVE-2018-11743 on Ubuntu 14.04 LTS (trusty) - medium.
    2018-06-05
    BACK
    mruby mruby 1.4.1
    debian debian linux 9.0
    mruby mruby 1.4.1