PT-2020-5325 · D Link · D-Link Dsl-2640B

Published 2020-03-30 · Updated 2021-07-21 · CVE-2020-9275

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions D-Link DSL-2640B versions prior to the fixed version

Description The issue is related to insufficient protection of registration data in the cfm UDP service of the D-Link DSL-2640B router software. This allows a remote attacker to gain access to administrative credentials. The cfm UDP service listening on port 65002 enables remote, unauthenticated exfiltration of administrative credentials.

Recommendations For D-Link DSL-2640B versions prior to the fixed version, consider disabling the cfm UDP service listening on port 65002 as a temporary workaround to minimize the risk of exploitation. Restrict access to the administrative interface to prevent unauthorized access until a patch is available.

Exploit

Fix

Missing Authentication

Insufficiently Protected Credentials

Weakness Enumeration

CWE-306

CWE-522

Related Identifiers

BDU:2021-00103

CVE-2020-9275

Affected Products

D-Link Dsl-2640B

References · 12

• 🔥 https://raelize.com/posts/d-link-dsl-2640b-security-advisories · Exploit
• https://dlink.com/en/security-bulletin · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-9275 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-9275 · Security Note
• https://bdu.fstec.ru/vul/2021-00103 · Security Note
• https://t.me/cvenotify/2948 · Telegram Post
• https://t.me/secharvester/8892 · Telegram Post
• https://cxsecurity.com/cveshow/CVE-2020-9275 · Note
• https://t.me/malwr/2992 · Telegram Post
• https://t.me/cybersecuritytechnologies/884 · Telegram Post
• https://t.me/rnetsec/11915 · Telegram Post
• https://raelize.com/advisories/CVE-2020-9275_D-Link-DSL-2640B_Remote-Credentials-Exfiltration_v1.0.txt · Note