X-Pack Security 6.2.0/6.2.1/6.2.2 XML path traversal

Summaryinfo

A vulnerability labeled as critical has been found in X-Pack Security 6.2.0/6.2.1/6.2.2. This vulnerability affects unknown code of the component XML Handler. The manipulation results in path traversal. This vulnerability is reported as CVE-2018-3822. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in X-Pack Security 6.2.0/6.2.1/6.2.2. Affected is an unknown part of the component XML Handler. 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, integrity, and availability. CVE summarizes:

X-Pack Security versions 6.2.0, 6.2.1, and 6.2.2 are vulnerable to a user impersonation attack via incorrect XML canonicalization and DOM traversal. An attacker might have been able to impersonate a legitimate user if the SAML Identity Provider allows for self registration with arbitrary identifiers and the attacker can register an account which an identifier that shares a suffix with a legitimate account. Both of those conditions must be true in order to exploit this flaw.

The bug was discovered 03/21/2018. The weakness was disclosed 03/30/2018 (Website). The advisory is shared for download at discuss.elastic.co. This vulnerability is traded as CVE-2018-3822 since 01/02/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

The vulnerability scanner Nessus provides a plugin with the ID 112044 (Elasticsearch ESA-2018-07), 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 r.

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

The vulnerability is also documented in the vulnerability database at Tenable (112044). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

• X-Pack Security

Version

• 6.2.0
• 6.2.1
• 6.2.2

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CPE 2.2info

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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