NVD Vulnerability Detail
Search Exploit, PoC
CVE-2021-20611
Summary

Improper Input Validation vulnerability in Mitsubishi Electric MELSEC iQ-R Series R00/01/02CPU, MELSEC iQ-R Series R04/08/16/32/120(EN)CPU, MELSEC iQ-R Series R08/16/32/120SFCPU, MELSEC iQ-R Series R08/16/32/120PCPU, MELSEC iQ-R Series R08/16/32/120PSFCPU, MELSEC iQ-R Series R16/32/64MTCPU, MELSEC iQ-R Series R12CCPU-V, MELSEC Q Series Q03UDECPU, MELSEC Q Series Q04/06/10/13/20/26/50/100UDEHCPU, MELSEC Q Series Q03/04/06/13/26UDVCPU, MELSEC Q Series Q04/06/13/26UDPVCPU, MELSEC Q Series Q12DCCPU-V, MELSEC Q Series Q24DHCCPU-V(G), MELSEC Q Series Q24/26DHCCPU-LS, MELSEC Q Series MR-MQ100, MELSEC Q Series Q172/173DCPU-S1, MELSEC Q Series Q172/173DSCPU, MELSEC Q Series Q170MCPU, MELSEC Q Series Q170MSCPU(-S1), MELSEC L Series L02/06/26CPU(-P), MELSEC L Series L26CPU-(P)BT and MELIPC Series MI5122-VW allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition by sending specially crafted packets. System reset is required for recovery.

Publication Date Dec. 2, 2021, 1:15 a.m.
Registration Date Dec. 2, 2021, 10 a.m.
Last Update Nov. 21, 2024, 2:46 p.m.
CVSS3.1 : HIGH
スコア 7.5
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC)
攻撃に必要な特権レベル(PR) 不要
利用者の関与(UI) 不要
影響の想定範囲(S) 変更なし
機密性への影響(C) なし
完全性への影響(I) なし
可用性への影響(A)
CVSS2.0 : HIGH
Score 7.8
Vector AV:N/AC:L/Au:N/C:N/I:N/A:C
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC)
攻撃前の認証要否(Au) 不要
機密性への影響(C) なし
完全性への影響(I) なし
可用性への影響(A)
Get all privileges. いいえ
Get user privileges いいえ
Get other privileges いいえ
User operation required いいえ
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r00_cpu_firmware:*:*:*:*:*:*:*:* 24
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r00_cpu:-:*:*:*:*:*:*:*
Configuration2 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r01_cpu_firmware:*:*:*:*:*:*:*:* 24
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r01_cpu:-:*:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r02_cpu_firmware:*:*:*:*:*:*:*:* 24
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r02_cpu:-:*:*:*:*:*:*:*
Configuration4 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r04_cpu_firmware:*:*:*:*:*:*:*:* 57
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r04_cpu:-:*:*:*:*:*:*:*
Configuration5 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r08_cpu_firmware:*:*:*:*:*:*:*:* 57
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r08_cpu:-:*:*:*:*:*:*:*
Configuration6 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r120_cpu_firmware:*:*:*:*:*:*:*:* 57
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r120_cpu:-:*:*:*:*:*:*:*
Configuration7 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r16_cpu_firmware:*:*:*:*:*:*:*:* 57
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r16_cpu:-:*:*:*:*:*:*:*
Configuration8 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r32_cpu_firmware:*:*:*:*:*:*:*:* 57
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r32_cpu:-:*:*:*:*:*:*:*
Configuration9 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r04_pcpu_firmware:*:*:*:*:*:*:*:* 29
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r04_pcpu:-:*:*:*:*:*:*:*
Configuration10 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r08_pcpu_firmware:*:*:*:*:*:*:*:* 29
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r08_pcpu:-:*:*:*:*:*:*:*
Configuration11 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r16_pcpu_firmware:*:*:*:*:*:*:*:* 29
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r16_pcpu:-:*:*:*:*:*:*:*
Configuration12 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r32_pcpu_firmware:*:*:*:*:*:*:*:* 29
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r32_pcpu:-:*:*:*:*:*:*:*
Configuration13 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r120_pcpu_firmware:*:*:*:*:*:*:*:* 29
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r120_pcpu:-:*:*:*:*:*:*:*
Configuration14 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r08_sfcpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r08_sfcpu:-:*:*:*:*:*:*:*
Configuration15 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r16_sfcpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r16_sfcpu:-:*:*:*:*:*:*:*
Configuration16 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r32_sfcpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r32_sfcpu:-:*:*:*:*:*:*:*
Configuration17 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r120_sfcpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r120_sfcpu:-:*:*:*:*:*:*:*
Configuration18 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r16_mtcpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r16_mtcpu:-:*:*:*:*:*:*:*
Configuration19 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r32_mtcpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r32_mtcpu:-:*:*:*:*:*:*:*
Configuration20 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r64_mtcpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r64_mtcpu:-:*:*:*:*:*:*:*
Configuration21 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r12_ccpu-v_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r12_ccpu-v:-:*:*:*:*:*:*:*
Configuration22 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q03udecpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q03udecpu:-:*:*:*:*:*:*:*
Configuration23 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q04udecpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q04udecpu:-:*:*:*:*:*:*:*
Configuration24 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q06udecpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q06udecpu:-:*:*:*:*:*:*:*
Configuration25 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q10udecpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q10udecpu:-:*:*:*:*:*:*:*
Configuration26 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q13udecpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q13udecpu:-:*:*:*:*:*:*:*
Configuration27 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q20udecpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q20udecpu:-:*:*:*:*:*:*:*
Configuration28 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q26udecpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q26udecpu:-:*:*:*:*:*:*:*
Configuration29 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q50udecpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q50udecpu:-:*:*:*:*:*:*:*
Configuration30 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q100udecpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q100udecpu:-:*:*:*:*:*:*:*
Configuration31 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q03udvcpu_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q03udvcpu:-:*:*:*:*:*:*:*
Configuration32 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q04udvcpu_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q04udvcpu:-:*:*:*:*:*:*:*
Configuration33 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q06udvcpu_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q06udvcpu:-:*:*:*:*:*:*:*
Configuration34 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q13udvcpu_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q13udvcpu:-:*:*:*:*:*:*:*
Configuration35 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q26udvcpu_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q26udvcpu:-:*:*:*:*:*:*:*
Configuration36 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q04udpvcpu_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q04udpvcpu:-:*:*:*:*:*:*:*
Configuration37 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q06udpvcpu_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q06udpvcpu:-:*:*:*:*:*:*:*
Configuration38 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q13udpvcpu_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q13udpvcpu:-:*:*:*:*:*:*:*
Configuration39 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q26udpvcpu_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q26udpvcpu:-:*:*:*:*:*:*:*
Configuration40 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q12dccpu-v_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q12dccpu-v:-:*:*:*:*:*:*:*
Configuration41 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q24dhccpu-v\(g\)_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q24dhccpu-v\(g\):-:*:*:*:*:*:*:*
Configuration42 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q24dhccpu-ls_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q24dhccpu-ls:-:*:*:*:*:*:*:*
Configuration43 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q26dhccpu-ls_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q26dhccpu-ls:-:*:*:*:*:*:*:*
Configuration44 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_mr-mq100_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_mr-mq100:-:*:*:*:*:*:*:*
Configuration45 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q172dcpu-s1_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q172dcpu-s1:-:*:*:*:*:*:*:*
Configuration46 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q173dcpu-s1_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q173dcpu-s1:-:*:*:*:*:*:*:*
Configuration47 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q172dscpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q172dscpu:-:*:*:*:*:*:*:*
Configuration48 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q173dscpu_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q173dscpu:-:*:*:*:*:*:*:*
Configuration49 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q170mscpu\(-s1\)_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q170mscpu\(-s1\):-:*:*:*:*:*:*:*
Configuration50 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_q170mcpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_q170mcpu:-:*:*:*:*:*:*:*
Configuration51 or higher or less more than less than
cpe:2.3:o:mitsubishi:melipc_mi5122-vw_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melipc_mi5122-vw:-:*:*:*:*:*:*:*
Configuration52 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_l26cpu-\(p\)bt_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_l26cpu-\(p\)bt:-:*:*:*:*:*:*:*
Configuration53 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_l26cpu\(-p\)_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_l26cpu\(-p\):-:*:*:*:*:*:*:*
Configuration54 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_l06cpu\(-p\)_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_l06cpu\(-p\):-:*:*:*:*:*:*:*
Configuration55 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_l02cpu\(-p\)_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_l02cpu\(-p\):-:*:*:*:*:*:*:*
Configuration56 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r08_cpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r08_cpu:*:*:*:*:*:*:*:*
Configuration57 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r16_cpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r16_cpu:-:*:*:*:*:*:*:*
Configuration58 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r32_cpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r32_cpu:-:*:*:*:*:*:*:*
Configuration59 or higher or less more than less than
cpe:2.3:o:mitsubishi:melsec_iq-r_r120_cpu_firmware:*:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:mitsubishi:melsec_iq-r_r120_cpu:-:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List

JVN Vulnerability Information
MELSEC および MELIPC シリーズにおける入力確認に関する脆弱性
Title MELSEC および MELIPC シリーズにおける入力確認に関する脆弱性
Summary

MELSEC および MELIPC シリーズには、入力確認に関する脆弱性が存在します。

Possible impacts サービス運用妨害 (DoS) 状態にされる可能性があります。
Solution

ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。

Publication Date Nov. 30, 2021, midnight
Registration Date Dec. 10, 2021, 2:10 p.m.
Last Update Dec. 10, 2021, 2:10 p.m.
Affected System
三菱電機
MELSEC iQ-R R00CPU ファームウェア "24" およびそれ以前
MELSEC iQ-R R01CPU ファームウェア "24" およびそれ以前
MELSEC iQ-R R02CPU ファームウェア "24" およびそれ以前
MELSEC iQ-R R04CPU ファームウェア "57" およびそれ以前
MELSEC iQ-R R08CPU ファームウェア "57" およびそれ以前
MELSEC iQ-R R08PCPU ファームウェア "29" およびそれ以前
MELSEC iQ-R R120CPU ファームウェア "57" およびそれ以前
MELSEC iQ-R R16CPU ファームウェア "57" およびそれ以前
MELSEC iQ-R R16PCPU ファームウェア "29" およびそれ以前
MELSEC iQ-R R32CPU ファームウェア "57" およびそれ以前
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
ベンダー情報
その他
Change Log
No Changed Details Date of change
1 [2021年12月10日]   掲載 Dec. 10, 2021, 11:56 a.m.