Multiple vulnerabilities in D-Link DIR-859
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 5 |
| CVE-ID | CVE-2019-17621 CVE-2019-20213 CVE-2019-20217 CVE-2019-20216 CVE-2019-20215 |
| CWE-ID | CWE-78 CWE-200 |
| Exploitation vector | Network |
| Public exploit |
Vulnerability #1 is being exploited in the wild. Public exploit code for vulnerability #2 is available. Public exploit code for vulnerability #3 is available. Public exploit code for vulnerability #4 is available. Public exploit code for vulnerability #5 is available. |
| Vulnerable software |
DIR-859 Hardware solutions / Routers for home users |
| Vendor | D-Link |
Security Bulletin
This security bulletin contains information about 5 vulnerabilities.
1) OS Command Injection
EUVDB-ID: #VU24736
Risk: High
CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]
CVE-ID: CVE-2019-17621
CWE-ID:
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation in the UPnP endpoint URL in /gena.cgi. A remote unauthenticated attacker can send a specially crafted HTTP SUBSCRIBE request to the UPnP service when connecting to the local network and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsDIR-859: 1.05 - 1.06b01Beta01
CPE2.3 External linkshttps://packetstormsecurity.com/files/156054/D-Link-DIR-859-Unauthenticated-Remote-Command-Execution.html
https://medium.com/@s1kr10s/d-link-dir-859-rce-unautenticated-cve-2019-17621-en-d94b47a15104
https://medium.com/@s1kr10s/d-link-dir-859-rce-unautenticated-cve-2019-17621-es-fad716629ff9
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10146
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10147
https://www.dlink.com/en/security-bulletin
https://www.ftc.gov/system/files/documents/cases/dlink_proposed_order_and_judgment_7-2-19.pdf
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
2) Information disclosure
EUVDB-ID: #VU24735
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 - Information exposure
Exploit availability: No
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsDIR-859: 1.05 - 1.06b01Beta01
CPE2.3 External linkshttps://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
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
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.
3) OS Command Injection
EUVDB-ID: #VU24734
Risk: High
CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]
CVE-ID: CVE-2019-20217
CWE-ID:
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to the SERVER_ID is mishandled in the "ssdpcgi()" function in "/htdocs/cgibin". A remote unauthenticated attacker can execute arbitrary OS commands on the target system via the urn: to the M-SEARCH method.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsDIR-859: 1.05 - 1.06b01Beta01
CPE2.3 External linkshttps://medium.com/@s1kr10s/d-link-dir-859-rce-unauthenticated-cve-2019-20216-cve-2019-20217-en-6bca043500ae
https://medium.com/@s1kr10s/d-link-dir-859-rce-unauthenticated-cve-2019-20216-cve-2019-20217-es-e11ca6168d35
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10147
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
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.
4) OS Command Injection
EUVDB-ID: #VU24733
Risk: High
CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]
CVE-ID: CVE-2019-20216
CWE-ID:
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to the REMOTE_PORT is mishandled in the "ssdpcgi()" function in "/htdocs/cgibin". A remote unauthenticated attacker can execute arbitrary OS commands on the target system via urn: to the M-SEARCH method.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsDIR-859: 1.05 - 1.06b01Beta01
CPE2.3 External linkshttps://medium.com/@s1kr10s/d-link-dir-859-rce-unauthenticated-cve-2019-20216-cve-2019-20217-en-6bca043500ae
https://medium.com/@s1kr10s/d-link-dir-859-rce-unauthenticated-cve-2019-20216-cve-2019-20217-es-e11ca6168d35
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10147
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
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.
5) OS Command Injection
EUVDB-ID: #VU24732
Risk: High
CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]
CVE-ID: CVE-2019-20215
CWE-ID:
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to the HTTP_ST is mishandled in the "ssdpcgi()" function in "/htdocs/cgibin". A remote unauthenticated attacker can execute arbitrary OS commands on the target system via a urn: to the M-SEARCH method.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsDIR-859: 1.05 - 1.06b01Beta01
CPE2.3 External linkshttps://medium.com/@s1kr10s/d-link-dir-859-unauthenticated-rce-in-ssdpcgi-http-st-cve-2019-20215-en-2e799acb8a73
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10147
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.
