#VU24735 Information disclosure in DIR-859 - CVE-2019-20213

Vulnerability identifier: #VU24735

Vulnerability risk: Medium

CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2019-20213

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
DIR-859
Hardware solutions / Routers for home users

Vendor: D-Link

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to insufficient protection of user-supplied input in the "AUTHORIZED_GROUP=1%0a" value, as demonstrated by "vpnconfig.php" file. A remote attacker can gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

DIR-859: 1.05 - 1.06b01Beta01

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External links
https://medium.com/@s1kr10s/d-link-dir-859-unauthenticated-information-disclosure-en-faf1a9a13f3f
https://medium.com/@s1kr10s/d-link-dir-859-unauthenticated-information-disclosure-es-6540f7f55b03
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10146
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10147

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.