NVD Vulnerability Detail
Search Exploit, PoC
CVE-2021-27239
Summary

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6400 and R6700 firmware version 1.0.4.98 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the upnpd service, which listens on UDP port 1900 by default. A crafted MX header field in an SSDP message can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11851.

Publication Date March 30, 2021, 6:15 a.m.
Registration Date March 30, 2021, 10:02 a.m.
Last Update Nov. 21, 2024, 2:57 p.m.
CVSS3.1 : HIGH
スコア 8.8
Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
攻撃元区分(AV) 隣接
攻撃条件の複雑さ(AC) 低
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) 高
完全性への影響(I) 高
可用性への影響(A) 高
CVSS2.0 : HIGH
Score 8.3
Vector AV:A/AC:L/Au:N/C:C/I:C/A:C
攻撃元区分(AV) 隣接
攻撃条件の複雑さ(AC) 低
攻撃前の認証要否(Au) 不要
機密性への影響(C) 高
完全性への影響(I) 高
可用性への影響(A) 高
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:netgear:d6220_firmware:*:*:*:*:*:*:*:* 1.0.0.68
execution environment
1 cpe:2.3:h:netgear:d6220:-:*:*:*:*:*:*:*
Configuration2 or higher or less more than less than
cpe:2.3:o:netgear:d6400_firmware:*:*:*:*:*:*:*:* 1.0.0.102
execution environment
1 cpe:2.3:h:netgear:d6400:-:*:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:o:netgear:d7000_firmware:*:*:*:*:*:*:*:* 1.0.0.66
execution environment
1 cpe:2.3:h:netgear:d7000:v2:*:*:*:*:*:*:*
Configuration4 or higher or less more than less than
cpe:2.3:o:netgear:d8500_firmware:*:*:*:*:*:*:*:* 1.0.3.60
execution environment
1 cpe:2.3:h:netgear:d8500:-:*:*:*:*:*:*:*
Configuration5 or higher or less more than less than
cpe:2.3:o:netgear:dc112a_firmware:*:*:*:*:*:*:*:* 1.0.0.54
execution environment
1 cpe:2.3:h:netgear:dc112a:-:*:*:*:*:*:*:*
Configuration6 or higher or less more than less than
cpe:2.3:o:netgear:ex7000_firmware:*:*:*:*:*:*:*:* 1.0.1.94
execution environment
1 cpe:2.3:h:netgear:ex7000:-:*:*:*:*:*:*:*
Configuration7 or higher or less more than less than
cpe:2.3:o:netgear:ex7500_firmware:*:*:*:*:*:*:*:* 1.0.0.72
execution environment
1 cpe:2.3:h:netgear:ex7500:-:*:*:*:*:*:*:*
Configuration8 or higher or less more than less than
cpe:2.3:o:netgear:r6250_firmware:*:*:*:*:*:*:*:* 1.0.4.48
execution environment
1 cpe:2.3:h:netgear:r6250:-:*:*:*:*:*:*:*
Configuration9 or higher or less more than less than
cpe:2.3:o:netgear:r6300_firmware:*:*:*:*:*:*:*:* 1.0.4.50
execution environment
1 cpe:2.3:h:netgear:r6300:v2:*:*:*:*:*:*:*
Configuration10 or higher or less more than less than
cpe:2.3:o:netgear:r6400_firmware:*:*:*:*:*:*:*:* 1.0.1.68
execution environment
1 cpe:2.3:h:netgear:r6400:-:*:*:*:*:*:*:*
Configuration11 or higher or less more than less than
cpe:2.3:o:netgear:r6400_firmware:*:*:*:*:*:*:*:* 1.0.4.102
execution environment
1 cpe:2.3:h:netgear:r6400:v2:*:*:*:*:*:*:*
Configuration12 or higher or less more than less than
cpe:2.3:o:netgear:r6700_firmware:*:*:*:*:*:*:*:* 1.0.4.102
execution environment
1 cpe:2.3:h:netgear:r6700:v3:*:*:*:*:*:*:*
Configuration13 or higher or less more than less than
cpe:2.3:o:netgear:r6900p_firmware:*:*:*:*:*:*:*:* 1.3.2.132
execution environment
1 cpe:2.3:h:netgear:r6900p:-:*:*:*:*:*:*:*
Configuration14 or higher or less more than less than
cpe:2.3:o:netgear:r7000_firmware:*:*:*:*:*:*:*:* 1.0.11.116
execution environment
1 cpe:2.3:h:netgear:r7000:-:*:*:*:*:*:*:*
Configuration15 or higher or less more than less than
cpe:2.3:o:netgear:r7000p_firmware:*:*:*:*:*:*:*:* 1.3.2.132
execution environment
1 cpe:2.3:h:netgear:r7000p:-:*:*:*:*:*:*:*
Configuration16 or higher or less more than less than
cpe:2.3:o:netgear:r7100lg_firmware:*:*:*:*:*:*:*:* 1.0.0.64
execution environment
1 cpe:2.3:h:netgear:r7100lg:-:*:*:*:*:*:*:*
Configuration17 or higher or less more than less than
cpe:2.3:o:netgear:r7850_firmware:*:*:*:*:*:*:*:* 1.0.5.68
execution environment
1 cpe:2.3:h:netgear:r7850:-:*:*:*:*:*:*:*
Configuration18 or higher or less more than less than
cpe:2.3:o:netgear:r7900_firmware:*:*:*:*:*:*:*:* 1.0.4.38
execution environment
1 cpe:2.3:h:netgear:r7900:-:*:*:*:*:*:*:*
Configuration19 or higher or less more than less than
cpe:2.3:o:netgear:r7900p_firmware:*:*:*:*:*:*:*:* 1.4.1.68
execution environment
1 cpe:2.3:h:netgear:r7900p:-:*:*:*:*:*:*:*
Configuration20 or higher or less more than less than
cpe:2.3:o:netgear:r7960p_firmware:*:*:*:*:*:*:*:* 1.4.1.68
execution environment
1 cpe:2.3:h:netgear:r7960p:-:*:*:*:*:*:*:*
Configuration21 or higher or less more than less than
cpe:2.3:o:netgear:r8000_firmware:*:*:*:*:*:*:*:* 1.0.4.68
execution environment
1 cpe:2.3:h:netgear:r8000:-:*:*:*:*:*:*:*
Configuration22 or higher or less more than less than
cpe:2.3:o:netgear:r8000p_firmware:*:*:*:*:*:*:*:* 1.4.1.68
execution environment
1 cpe:2.3:h:netgear:r8000p:-:*:*:*:*:*:*:*
Configuration23 or higher or less more than less than
cpe:2.3:o:netgear:r8300_firmware:*:*:*:*:*:*:*:* 1.0.2.144
execution environment
1 cpe:2.3:h:netgear:r8300:-:*:*:*:*:*:*:*
Configuration24 or higher or less more than less than
cpe:2.3:o:netgear:r8500_firmware:*:*:*:*:*:*:*:* 1.0.2.144
execution environment
1 cpe:2.3:h:netgear:r8500:-:*:*:*:*:*:*:*
Configuration25 or higher or less more than less than
cpe:2.3:o:netgear:rax200_firmware:*:*:*:*:*:*:*:* 1.0.2.88
execution environment
1 cpe:2.3:h:netgear:rax200:-:*:*:*:*:*:*:*
Configuration26 or higher or less more than less than
cpe:2.3:o:netgear:rax75_firmware:*:*:*:*:*:*:*:* 1.0.3.102
execution environment
1 cpe:2.3:h:netgear:rax75:-:*:*:*:*:*:*:*
Configuration27 or higher or less more than less than
cpe:2.3:o:netgear:rax80_firmware:*:*:*:*:*:*:*:* 1.0.3.102
execution environment
1 cpe:2.3:h:netgear:rax80:-:*:*:*:*:*:*:*
Configuration28 or higher or less more than less than
cpe:2.3:o:netgear:rbr750_firmware:*:*:*:*:*:*:*:* 3.2.17.12
execution environment
1 cpe:2.3:h:netgear:rbr750:-:*:*:*:*:*:*:*
Configuration29 or higher or less more than less than
cpe:2.3:o:netgear:rbr850_firmware:*:*:*:*:*:*:*:* 3.2.17.12
execution environment
1 cpe:2.3:h:netgear:rbr850:-:*:*:*:*:*:*:*
Configuration30 or higher or less more than less than
cpe:2.3:o:netgear:rbs40v_firmware:*:*:*:*:*:*:*:* 2.6.2.4
execution environment
1 cpe:2.3:h:netgear:rbs40v:-:*:*:*:*:*:*:*
Configuration31 or higher or less more than less than
cpe:2.3:o:netgear:rbs750_firmware:*:*:*:*:*:*:*:* 3.2.17.12
execution environment
1 cpe:2.3:h:netgear:rbs750:-:*:*:*:*:*:*:*
Configuration32 or higher or less more than less than
cpe:2.3:o:netgear:rbs850_firmware:*:*:*:*:*:*:*:* 3.2.17.12
execution environment
1 cpe:2.3:h:netgear:rbs850:-:*:*:*:*:*:*:*
Configuration33 or higher or less more than less than
cpe:2.3:o:netgear:rs400_firmware:*:*:*:*:*:*:*:* 1.5.0.68
execution environment
1 cpe:2.3:h:netgear:rs400:-:*:*:*:*:*:*:*
Configuration34 or higher or less more than less than
cpe:2.3:o:netgear:wndr3400_firmware:*:*:*:*:*:*:*:* 1.0.1.38
execution environment
1 cpe:2.3:h:netgear:wndr3400:v3:*:*:*:*:*:*:*
Configuration35 or higher or less more than less than
cpe:2.3:o:netgear:wnr3500l_firmware:*:*:*:*:*:*:*:* 1.2.0.66
execution environment
1 cpe:2.3:h:netgear:wnr3500l:v2:*:*:*:*:*:*:*
Configuration36 or higher or less more than less than
cpe:2.3:o:netgear:xr300_firmware:*:*:*:*:*:*:*:* 1.0.3.56
execution environment
1 cpe:2.3:h:netgear:xr300:-:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List
JVN Vulnerability Information
NETGEAR R6400 および R6700 ファームウェアにおけるスタックベースのバッファオーバーフローの脆弱性
Title NETGEAR R6400 および R6700 ファームウェアにおけるスタックベースのバッファオーバーフローの脆弱性
Summary

NETGEAR R6400 および R6700 ファームウェアには、スタックベースのバッファオーバーフローの脆弱性が存在します。 Zero Day Initiative は、本脆弱性に ZDI-CAN-11851 を採番していました。

Possible impacts 情報を取得される、情報を改ざんされる、およびサービス運用妨害 (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 Jan. 21, 2021, midnight
Registration Date Dec. 6, 2021, 2:23 p.m.
Last Update Dec. 6, 2021, 2:23 p.m.
Affected System
ネットギア
D6200 ファームウェア 
D6400 ファームウェア 
D7000 ファームウェア 
D8500 ファームウェア 
DC112A ファームウェア 
EX7000 ファームウェア 
EX7500 ファームウェア 
R6250 ファームウェア 
R6400 ファームウェア 
R6700 ファームウェア 
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06日]
  掲載		 Dec. 6, 2021, 2:23 p.m.