TerraMaster TOS 3.1.03 ajaxdata.php checkName command injection

Summaryinfo

A vulnerability classified as critical was found in TerraMaster TOS 3.1.03. Affected by this vulnerability is an unknown functionality of the file ajaxdata.php. Executing a manipulation of the argument checkName can lead to command injection. The identification of this vulnerability is CVE-2018-13358. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in TerraMaster TOS 3.1.03 (Network Attached Storage Software). It has been declared as critical. This vulnerability affects an unknown function of the file ajaxdata.php. The manipulation of the argument checkName with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

System command injection in ajaxdata.php in TerraMaster TOS version 3.1.03 allows attackers to execute system commands via the "checkName" parameter.

The bug was discovered 06/13/2018. The weakness was shared 11/27/2018 (Website). The advisory is shared for download at blog.securityevaluators.com. This vulnerability was named CVE-2018-13358 since 07/05/2018. The exploitation appears to be easy. The attack can be initiated remotely. The successful exploitation requires a single authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1202.

The vulnerability was handled as a non-public zero-day exploit for at least 167 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:ajaxdata.php it is possible to find vulnerable targets with Google Hacking. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13368 (TerraMaster F2-240 TOS Multiple Vulnerabilities).

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

The entries VDB-127185, VDB-127186, VDB-127187 and VDB-127188 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Network Attached Storage Software

Name

• TerraMaster TOS

Version

• 3.1.03

License

• commercial

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Once again VulDB remains the best source for vulnerability data.

Discussion