Vulnerability Monitor

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CVE-2020-9277

An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. Authentication can be bypassed when accessing cgi modules. This allows one to perform administrative tasks (e.g., modify the admin password) with no authentication.

Published

2020-04-20T23:15:12.707

Last Modified

2024-11-21T05:40:20.367

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-287

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	dlink	dsl-2640b_firmware	eu_4.01b	Yes
Hardware	dlink	dsl-2640b	-	No

References

https://raelize.com/advisories/CVE-2020-9277_D-Link-DSL-2640B_CGI-Authentication-bypass_v1.0.txt Third Party Advisory ([email protected])
https://raelize.com/posts/d-link-dsl-2640b-security-advisories/ Exploit, Third Party Advisory ([email protected])
https://www.dlink.com/en/security-bulletin Vendor Advisory ([email protected])
https://raelize.com/advisories/CVE-2020-9277_D-Link-DSL-2640B_CGI-Authentication-bypass_v1.0.txt Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://raelize.com/posts/d-link-dsl-2640b-security-advisories/ Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.dlink.com/en/security-bulletin Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)