Vulnerability Name:

CVE-2018-21134 (CCN-180539)

Assigned:2018-09-26
Published:2018-09-26
Updated:2020-05-04
Summary:Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects R6700 before 1.0.1.48, R7900 before 1.0.2.16, R6900 before 1.0.1.48, R7000P before 1.3.1.44, R6900P before 1.3.1.44, R6250 before 1.0.4.30, R6300v2 before 1.0.4.32, R6400 before 1.0.1.44, R6400v2 before 1.0.2.60, R7000 before 1.0.9.34, R7100LG before 1.0.0.48, R7300 before 1.0.0.68, R8000 before 1.0.4.18, R8000P before 1.4.1.24, R7900P before 1.4.1.24, R8500 before 1.0.2.122, R8300 before 1.0.2.122, WN2500RPv2 before 1.0.1.54, EX3700 before 1.0.0.72, EX3800 before 1.0.0.72, EX6000 before 1.0.0.32, EX6100 before 1.0.2.24, EX6120 before 1.0.0.42, EX6130 before 1.0.0.24, EX6150v1 before 1.0.0.42, EX6200 before 1.0.3.88, EX7000 before 1.0.0.66, D7000v2 before 1.0.0.51, D6220 before 1.0.0.46, D6400 before 1.0.0.82, and D8500 before 1.0.3.42.
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
6.8 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L)
5.9 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
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
6.7 Medium (CCN CVSS v2 Vector: AV:A/AC:L/Au:S/C:C/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-787
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2018-21134

Source: XF
Type: UNKNOWN
netgear-cve201821134-bo(180539)

Source: CCN
Type: NETGEAR Security Advisory: PSV-2017-2019
Security Advisory for Pre-Authentication Stack Overflow on Some Routers and Wireless Extenders

Source: CONFIRM
Type: Vendor Advisory
https://kb.netgear.com/000060226/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-and-Wireless-Extenders-PSV-2017-2019

Vulnerable Configuration:Configuration 1:
  • cpe:/o:netgear:r6700_firmware:*:*:*:*:*:*:*:* (Version < 1.0.1.48)
  • AND
  • cpe:/h:netgear:r6700:-:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:netgear:r7900_firmware:*:*:*:*:*:*:*:* (Version < 1.0.2.16)
  • AND
  • cpe:/h:netgear:r7900:-:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:netgear:r6900_firmware:*:*:*:*:*:*:*:* (Version < 1.0.1.48)
  • AND
  • cpe:/h:netgear:r6900:-:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/o:netgear:r7000p_firmware:*:*:*:*:*:*:*:* (Version < 1.3.1.44)
  • AND
  • cpe:/h:netgear:r7000p:-:*:*:*:*:*:*:*

    • Configuration 5:
  • cpe:/o:netgear:r6900p_firmware:*:*:*:*:*:*:*:* (Version < 1.3.1.44)
  • AND
  • cpe:/h:netgear:r6900p:-:*:*:*:*:*:*:*

    • Configuration 6:
  • cpe:/o:netgear:r6250_firmware:*:*:*:*:*:*:*:* (Version < 1.0.4.30)
  • AND
  • cpe:/h:netgear:r6250:-:*:*:*:*:*:*:*

    • Configuration 7:
  • cpe:/o:netgear:r6300_firmware:*:*:*:*:*:*:*:* (Version < 1.0.4.32)
  • AND
  • cpe:/h:netgear:r6300:v2:*:*:*:*:*:*:*

    • Configuration 8:
  • cpe:/o:netgear:r6400_firmware:*:*:*:*:*:*:*:* (Version < 1.0.1.44)
  • AND
  • cpe:/h:netgear:r6400:-:*:*:*:*:*:*:*

    • Configuration 9:
  • cpe:/o:netgear:r6400_firmware:*:*:*:*:*:*:*:* (Version < 1.0.2.60)
  • AND
  • cpe:/h:netgear:r6400:v2:*:*:*:*:*:*:*

    • Configuration 10:
  • cpe:/o:netgear:r7000_firmware:*:*:*:*:*:*:*:* (Version < 1.0.9.34)
  • AND
  • cpe:/h:netgear:r7000:-:*:*:*:*:*:*:*

    • Configuration 11:
  • cpe:/o:netgear:r7100lg_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.48)
  • AND
  • cpe:/h:netgear:r7100lg:-:*:*:*:*:*:*:*

    • Configuration 12:
  • cpe:/o:netgear:r7300_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.68)
  • AND
  • cpe:/h:netgear:r7300:-:*:*:*:*:*:*:*

    • Configuration 13:
  • cpe:/o:netgear:r8000_firmware:*:*:*:*:*:*:*:* (Version < 1.0.4.18)
  • AND
  • cpe:/h:netgear:r8000:-:*:*:*:*:*:*:*

    • Configuration 14:
  • cpe:/o:netgear:r8000p_firmware:*:*:*:*:*:*:*:* (Version < 1.4.1.24)
  • AND
  • cpe:/h:netgear:r8000p:-:*:*:*:*:*:*:*

    • Configuration 15:
  • cpe:/o:netgear:r7900p_firmware:*:*:*:*:*:*:*:* (Version < 1.4.1.24)
  • AND
  • cpe:/h:netgear:r7900p:-:*:*:*:*:*:*:*

    • Configuration 16:
  • cpe:/o:netgear:r8500_firmware:*:*:*:*:*:*:*:* (Version < 1.0.2.122)
  • AND
  • cpe:/h:netgear:r8500:-:*:*:*:*:*:*:*

    • Configuration 17:
  • cpe:/o:netgear:r8300_firmware:*:*:*:*:*:*:*:* (Version < 1.0.2.122)
  • AND
  • cpe:/h:netgear:r8300:-:*:*:*:*:*:*:*

    • Configuration 18:
  • cpe:/o:netgear:wn2500rp_firmware:*:*:*:*:*:*:*:* (Version < 1.0.1.54)
  • AND
  • cpe:/h:netgear:wn2500rp:v2:*:*:*:*:*:*:*

    • Configuration 19:
  • cpe:/o:netgear:ex3700_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.72)
  • AND
  • cpe:/h:netgear:ex3700:-:*:*:*:*:*:*:*

    • Configuration 20:
  • cpe:/o:netgear:ex3800_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.72)
  • AND
  • cpe:/h:netgear:ex3800:-:*:*:*:*:*:*:*

    • Configuration 21:
  • cpe:/o:netgear:ex6000_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.32)
  • AND
  • cpe:/h:netgear:ex6000:-:*:*:*:*:*:*:*

    • Configuration 22:
  • cpe:/o:netgear:ex6100_firmware:*:*:*:*:*:*:*:* (Version < 1.0.2.24)
  • AND
  • cpe:/h:netgear:ex6100:-:*:*:*:*:*:*:*

    • Configuration 23:
  • cpe:/o:netgear:ex6120_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.42)
  • AND
  • cpe:/h:netgear:ex6120:-:*:*:*:*:*:*:*

    • Configuration 24:
  • cpe:/o:netgear:ex6130_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.24)
  • AND
  • cpe:/h:netgear:ex6130:-:*:*:*:*:*:*:*

    • Configuration 25:
  • cpe:/o:netgear:ex6150_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.42)
  • AND
  • cpe:/h:netgear:ex6150:v1:*:*:*:*:*:*:*

    • Configuration 26:
  • cpe:/o:netgear:ex6200_firmware:*:*:*:*:*:*:*:* (Version < 1.0.3.88)
  • AND
  • cpe:/h:netgear:ex6200:-:*:*:*:*:*:*:*

    • Configuration 27:
  • cpe:/o:netgear:ex7000_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.66)
  • AND
  • cpe:/h:netgear:ex7000:-:*:*:*:*:*:*:*

    • Configuration 28:
  • cpe:/o:netgear:d7000_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.51)
  • AND
  • cpe:/h:netgear:d7000:v2:*:*:*:*:*:*:*

    • Configuration 29:
  • cpe:/o:netgear:d6220_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.46)
  • AND
  • cpe:/h:netgear:d6220:-:*:*:*:*:*:*:*

    • Configuration 30:
  • cpe:/o:netgear:d6400_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.82)
  • AND
  • cpe:/h:netgear:d6400:-:*:*:*:*:*:*:*

    • Configuration 31:
  • cpe:/o:netgear:d8500_firmware:*:*:*:*:*:*:*:* (Version < 1.0.3.42)
  • AND
  • cpe:/h:netgear:d8500:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    netgear r6700 firmware *
    netgear r6700 -
    netgear r7900 firmware *
    netgear r7900 -
    netgear r6900 firmware *
    netgear r6900 -
    netgear r7000p firmware *
    netgear r7000p -
    netgear r6900p firmware *
    netgear r6900p -
    netgear r6250 firmware *
    netgear r6250 -
    netgear r6300 firmware *
    netgear r6300 v2
    netgear r6400 firmware *
    netgear r6400 -
    netgear r6400 firmware *
    netgear r6400 v2
    netgear r7000 firmware *
    netgear r7000 -
    netgear r7100lg firmware *
    netgear r7100lg -
    netgear r7300 firmware *
    netgear r7300 -
    netgear r8000 firmware *
    netgear r8000 -
    netgear r8000p firmware *
    netgear r8000p -
    netgear r7900p firmware *
    netgear r7900p -
    netgear r8500 firmware *
    netgear r8500 -
    netgear r8300 firmware *
    netgear r8300 -
    netgear wn2500rp firmware *
    netgear wn2500rp v2
    netgear ex3700 firmware *
    netgear ex3700 -
    netgear ex3800 firmware *
    netgear ex3800 -
    netgear ex6000 firmware *
    netgear ex6000 -
    netgear ex6100 firmware *
    netgear ex6100 -
    netgear ex6120 firmware *
    netgear ex6120 -
    netgear ex6130 firmware *
    netgear ex6130 -
    netgear ex6150 firmware *
    netgear ex6150 v1
    netgear ex6200 firmware *
    netgear ex6200 -
    netgear ex7000 firmware *
    netgear ex7000 -
    netgear d7000 firmware *
    netgear d7000 v2
    netgear d6220 firmware *
    netgear d6220 -
    netgear d6400 firmware *
    netgear d6400 -
    netgear d8500 firmware *
    netgear d8500 -