Citrix NetScaler ADC/NetScaler Gateway 10.5/11.0/11.1/12.0 path traversal

Summaryinfo

A vulnerability was found in Citrix NetScaler ADC and NetScaler Gateway 10.5/11.0/11.1/12.0. It has been rated as critical. Affected is an unknown function. Performing a manipulation results in path traversal. This vulnerability is known as CVE-2018-6810. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Citrix NetScaler ADC and NetScaler Gateway 10.5/11.0/11.1/12.0 (Network Management Software). It has been classified as critical. This affects an unknown function. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, and integrity. The summary by CVE is:

Directory traversal vulnerability in NetScaler ADC 10.5, 11.0, 11.1, and 12.0, and NetScaler Gateway 10.5, 11.0, 11.1, and 12.0 allows remote attackers to traverse the directory on the target system via a crafted request.

The bug was discovered 03/01/2018. The weakness was published 03/06/2018 (Website). It is possible to read the advisory at securitytracker.com. This vulnerability is uniquely identified as CVE-2018-6810 since 02/07/2018. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 110903 (Citrix NetScaler Multiple Vulnerabilities (CTX232161)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context c. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370797 (Citrix NetScaler ADC and Gateway Multiple Security Updates (CTX232161)).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (110903). Similar entries are available at VDB-112730, VDB-114133, VDB-114134 and VDB-114136. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Network Management Software

Vendor

• Citrix

Name

• NetScaler ADC
• NetScaler Gateway

Version

• 10.5
• 11.0
• 11.1
• 12.0

License

• commercial

Website

• Vendor: https://www.citrix.com/

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Be aware that VulDB is the high quality source for vulnerability data.

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