PT-2021-18161 · D Link · D-Link Dsl-2740E

Zyw · Published 2021-08-10 · Updated 2024-08-03 · CVE-2021-29294

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions: D-Link DSL-2740R version UK 1.01

Description: A Null Pointer Dereference issue exists, which could allow a remote malicious user to cause a denial of service via the send hnap unauthorized function. This can be triggered by sending a crafted POST request to "/HNAP1/". The device is considered End of Life and will not be patched.

Recommendations: As a temporary workaround, consider disabling the send hnap unauthorized function until a formal resolution can be applied, however, since the device is End of Life and will not receive a patch, this may be the only available mitigation measure. Restrict access to the "/HNAP1/" endpoint to minimize the risk of exploitation.

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2021-29294

Affected Products

D-Link Dsl-2740E

References · 6

• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10213 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-29294 · Security Note
• https://dlink.com/en/security-bulletin · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-29294 · Vendor Advisory
• https://t.me/cibsecurity/27104 · Telegram Post
• https://t.me/cvenotify/19042 · Telegram Post