D-Link DIR-846 100A35 SetMasterWLanSettings.php SetMasterWLanSettings Shell Metacharacter os command injection

Summaryinfo

A vulnerability was found in D-Link DIR-846 100A35. It has been rated as critical. This affects the function SetMasterWLanSettings of the file /squashfs-root/www/HNAP1/control/SetMasterWLanSettings.php. Performing a manipulation as part of Shell Metacharacter results in os command injection. This vulnerability is cataloged as CVE-2019-17509. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as very critical, was found in D-Link DIR-846 100A35 (Router Operating System). This affects the function SetMasterWLanSettings of the file /squashfs-root/www/HNAP1/control/SetMasterWLanSettings.php. The manipulation as part of a Shell Metacharacter leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

D-Link DIR-846 devices with firmware 100A35 allow remote attackers to execute arbitrary OS commands as root by leveraging admin access and sending a /HNAP1/ request for SetMasterWLanSettings with shell metacharacters to /squashfs-root/www/HNAP1/control/SetMasterWLanSettings.php.

The weakness was shared 10/11/2019. This vulnerability is uniquely identified as CVE-2019-17509 since 10/11/2019. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 01/08/2024). MITRE ATT&CK project uses the attack technique T1202 for this issue.

By approaching the search of inurl:squashfs-root/www/HNAP1/control/SetMasterWLanSettings.php it is possible to find vulnerable targets with Google Hacking.

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

The entry VDB-143410 is related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• D-Link

Name

• DIR-846

Version

• 100A35

License

• commercial

Website

• Vendor: https://www.dlink.com/

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion