# CVE-2024-3273: D-Link NAS - RCE

> Live exploitation tracking for CVE-2024-3273 by the CrowdSec Live Exploit Tracker, built from real-world attack data crowdsourced from CrowdSec's global network.

Page: https://tracker.crowdsec.net/cves/CVE-2024-3273

## Key facts

- **Exploitation phase:** Limited Exploitation. The vulnerability is known but shows very limited attacker interest or exploitation activity.
- **CVSS score:** 7.3
- **Public exploit available:** Yes
- **Affected products:** D-Link DNS-340L
- **Weaknesses:** CWE-77 (Improper Neutralization of Special Elements used in a Command ('Command Injection'))
- **Tags:** nas

## Description

** UNSUPPORTED WHEN ASSIGNED ** A vulnerability, which was classified as critical, was found in D-Link DNS-320L, DNS-325, DNS-327L and DNS-340L up to 20240403. Affected is an unknown function of the file /cgi-bin/nas_sharing.cgi of the component HTTP GET Request Handler. The manipulation of the argument system leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-259284. NOTE: This vulnerability only affects products that are no longer supported by the maintainer. NOTE: Vendor was contacted early and confirmed immediately that the product is end-of-life. It should be retired and replaced.

## CrowdSec analysis

[CVE-2024-3273](https://euvd.enisa.europa.eu/vulnerability/CVE-2024-3273) is a critical vulnerability impacting certain legacy D-Link NAS devices, allowing remote attackers to execute commands by exploiting weaknesses in the HTTP request handling for specific endpoints.

CrowdSec has been tracking this vulnerability and its exploits since 8th of May 2024.

Data from the CrowdSec community indicates that exploitation of CVE-2024-3273 is highly selective and intelligence-driven. Threat actors use advanced reconnaissance and carefully choose their targets, often as part of sophisticated campaigns or advanced persistent threat operations.
Telemetry from the CrowdSec network also shows that exploitation activity for CVE-2024-3273 remains steady week-over-week. Attack volumes are consistent with long-term trends, indicating sustained interest from threat actors. CVE-2024-3273 continues to be an active part of the threat landscape and will likely remain this way for the forseeable future.

Observed exploitation attempts focus on the `/cgi-bin/nas_sharing.cgi` endpoint.

## Timeline

- 2024-04-04: CVE Published. CVE-2024-3273 is published to NVD.
- 2024-04-11: CISA KEV. CVE-2024-3273 is added to the Known Exploited Vulnerabilities catalog by CISA.
- 2024-05-02: CISA Remediation Deadline. Expiration of the CISA remediation deadline as described in [BOD 22-01](https://www.cisa.gov/news-events/directives/bod-22-01-reducing-significant-risk-known-exploited-vulnerabilities).
- 2024-05-08: Rule Released. CrowdSec releases a rule to detect CVE-2024-3273 exploitation attempts against the CrowdSec Network.
- 2024-12-27: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2024-3273 for the first time.

## References

- https://vuldb.com/?id.259284
- https://vuldb.com/?submit.304661
- https://github.com/netsecfish/dlink
- https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10383
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-3273.yaml

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2024-3273) follows observed exploitation activity for CVE-2024-3273. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.