D-Link DCS-5009/DCS-5010/DCS-5020L alphapd /setSystemAdmin AdminID command injection

Summaryinfo

A vulnerability, which was classified as critical, was found in D-Link DCS-5009, DCS-5010 and DCS-5020L. This vulnerability affects unknown code of the file /setSystemAdmin of the component alphapd. The manipulation of the argument AdminID results in command injection. This vulnerability is reported as CVE-2017-17020. The attack can be launched remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability classified as critical has been found in D-Link DCS-5009, DCS-5010 and DCS-5020L (affected version not known). Affected is some unknown functionality of the file /setSystemAdmin of the component alphapd. The manipulation of the argument AdminID with an unknown input leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

On D-Link DCS-5009 devices with firmware 1.08.11 and earlier, DCS-5010 devices with firmware 1.14.09 and earlier, and DCS-5020L devices with firmware before 1.15.01, command injection in alphapd (binary responsible for running the camera's web server) allows remote authenticated attackers to execute code through sanitized /setSystemAdmin user input in the AdminID field being passed directly to a call to system.

The bug was discovered 04/27/2018. The weakness was disclosed 05/01/2018 (Website). The advisory is shared for download at supportannouncement.us.dlink.com. This vulnerability is traded as CVE-2017-17020 since 11/27/2017. The exploitability is told to be easy. It is possible to launch the attack remotely. A authentication is required for exploitation. Technical details and a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1202.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $5k-$25k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (44580). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• D-Link

Name

• DCS-5009
• DCS-5010
• DCS-5020L

License

• commercial

Website

• Vendor: https://www.dlink.com/

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Once again VulDB remains the best source for vulnerability data.

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