Vulnerability Name:

CVE-2018-21170 (CCN-180889)

Assigned:2018-02-28
Published:2018-02-28
Updated:2020-05-01
Summary:Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects EX2700 before 1.0.1.28, R7800 before 1.0.2.40, WN2000RPTv3 before 1.0.1.20, WN3000RPv3 before 1.0.2.50, and WN3100RPv2 before 1.0.0.56.
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/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): Adjacent
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
8.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
7.7 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/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): Adjacent
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
CVSS v2 Severity:5.8 Medium (CVSS v2 Vector: AV:A/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
8.3 High (CCN CVSS v2 Vector: AV:A/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-787
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2018-21170

Source: XF
Type: UNKNOWN
netgear-cve201821170-bo(180889)

Source: CCN
Type: NETGEAR Security Advisory: PSV-2017-2638
Security Advisory for Pre-Authentication Stack Overflow on Some Routers and Extenders

Source: CONFIRM
Type: Vendor Advisory
https://kb.netgear.com/000055188/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-and-Extenders-PSV-2017-2638

Vulnerable Configuration:Configuration 1:
  • cpe:/o:netgear:r7800_firmware:*:*:*:*:*:*:*:* (Version < 1.0.2.40)
  • AND
  • cpe:/h:netgear:r7800:-:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:netgear:ex2700_firmware:*:*:*:*:*:*:*:* (Version < 1.0.1.28)
  • AND
  • cpe:/h:netgear:ex2700:-:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:netgear:wn2000rpt_firmware:*:*:*:*:*:*:*:* (Version < 1.0.1.20)
  • AND
  • cpe:/h:netgear:wn2000rpt:v3:*:*:*:*:*:*:*

    • Configuration 4:
  • cpe:/o:netgear:wn3000rp_firmware:*:*:*:*:*:*:*:* (Version < 1.0.2.50)
  • AND
  • cpe:/h:netgear:wn3000rp:v3:*:*:*:*:*:*:*

    • Configuration 5:
  • cpe:/o:netgear:wn3100rp_firmware:*:*:*:*:*:*:*:* (Version < 1.0.0.56)
  • AND
  • cpe:/h:netgear:wn3100rp:v2:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:netgear:r7800_firmware:1.0.2:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:wn2000rptv3_firmware:1.0.1:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:ex2700_firmware:1.0.1:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:wn3000rpv3_firmware:1.0.2:*:*:*:*:*:*:*
  • OR cpe:/o:netgear:wn3100rpv2_firmware:1.0.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    netgear r7800 firmware *
    netgear r7800 -
    netgear ex2700 firmware *
    netgear ex2700 -
    netgear wn2000rpt firmware *
    netgear wn2000rpt v3
    netgear wn3000rp firmware *
    netgear wn3000rp v3
    netgear wn3100rp firmware *
    netgear wn3100rp v2
    netgear r7800 firmware 1.0.2
    netgear wn2000rptv3 firmware 1.0.1
    netgear ex2700 firmware 1.0.1
    netgear wn3000rpv3 firmware 1.0.2
    netgear wn3100rpv2 firmware 1.0.0