Vulnerability · Published May 3, 2024 · Assigned by zdi

CVE-2023-32152D-Link DIR-2640 HNAP LoginPassword Authentication Bypass Vulnerability

Medium 6.5

In plain English

A medium-severity security flaw in DIR-2640 from D-Link. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 28.9% (higher than 98% of all known vulnerabilities).

Severity (CVSS 3.0)6.5Medium

Exploit odds (30 days)28.9%top 1.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

D-Link DIR-2640 HNAP LoginPassword Authentication Bypass Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link DIR-2640 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web management interface, which listens on TCP port 80 by default. A specially crafted login request can cause authentication to succeed without providing proper credentials. An attacker can leverage this vulnerability to bypass authentication on the system. . Was ZDI-CAN-19549.

Affected products (as reported)

Vendor	Product	Versions
D-Link	DIR-2640	1.11B02 (non-US, CA version)

Weakness: CWE-303 · Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References

ZDI-23-544 x_research-advisory
vendor-provided URL vendor-advisory