PT-2024-2666 · D Link · D-Link Dns-327L+3

Netsecfish · Published 2024-04-03 · Updated 2026-05-09 · CVE-2024-3273

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions D-Link DNS-320L (affected versions not specified) D-Link DNS-325 (affected versions not specified) D-Link DNS-327L (affected versions not specified) D-Link DNS-340L (affected versions not specified)

Description A critical issue exists in the HTTP GET Request Handler component within the /cgi-bin/nas sharing.cgi file. The flaw is caused by a combination of a hardcoded backdoor account (username messagebus with an empty password) and insufficient neutralization of special elements in the system parameter. This allows a remote attacker to execute arbitrary commands by sending a specially crafted HTTP GET request containing a Base64-encoded command. Approximately 92,000 devices worldwide are estimated to be affected. Real-world exploitation has been observed, specifically for deploying Mirai-like botnets (such as skid.x86) to conduct large-scale DDoS attacks.

Recommendations Retire and replace the affected devices as they have reached end-of-life and no official patches will be provided. As a temporary mitigation, disconnect the devices from the network to prevent remote exploitation.

Exploit

Fix

RCE

Command Injection

Weakness Enumeration

CWE-77

Related Identifiers

BDU:2024-02740

CVE-2024-3273

Affected Products

D-Link Dns-320

D-Link Dns-325

D-Link Dns-327L

D-Link Dns-340L

References · 109

• 🔥 https://github.com/Chocapikk/CVE-2024-3273 · Exploit
• 🔥 https://github.com/netsecfish/dlink · Exploit
• 🔥 https://github.com/adhikara13/CVE-2024-3273 · Exploit
• 🔥 https://github.com/ThatNotEasy/CVE-2024-3273 · Exploit
• 🔥 https://github.com/K3ysTr0K3R/CVE-2024-3273-EXPLOIT · Exploit
• https://osv.dev/vulnerability/CVE-2024-3273 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-3273 · Security Note
• https://bdu.fstec.ru/vul/2024-02740 · Security Note
• https://github.com/netsecfish/dlink?tab=readme-ov-file · Note
• https://twitter.com/CeptBiro/status/1777331485910974637 · Twitter Post
• https://t.me/cvenotify/76858 · Telegram Post
• https://t.me/cvenotify/88329 · Telegram Post
• https://t.me/nekaspersky/4014 · Telegram Post
• https://twitter.com/GreyNoiseIO/status/1777358368866283670 · Twitter Post
• https://twitter.com/GreyNoiseIO/status/1777417884421050809 · Twitter Post