WildFly up to 6.0.0.Alpha2 WAR Archive path traversal

Summaryinfo

A vulnerability labeled as critical has been found in WildFly up to 6.0.0.Alpha2. This affects an unknown part of the component WAR Archive Handler. Such manipulation leads to path traversal. This vulnerability is referenced as CVE-2018-10862. The attack can only be performed from a local environment. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in WildFly up to 6.0.0.Alpha2 (Application Server Software). It has been rated as critical. Affected by this issue is an unknown part of the component WAR Archive Handler. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity, and availability. CVE summarizes:

WildFly Core before version 6.0.0.Alpha3 does not properly validate file paths in .war archives, allowing for the extraction of crafted .war archives to overwrite arbitrary files. This is an instance of the 'Zip Slip' vulnerability.

The bug was discovered 07/29/2018. The weakness was published 07/27/2018 as not defined bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is handled as CVE-2018-10862 since 05/09/2018. The attack may be launched remotely. A simple authentication is necessary for exploitation. 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 111486 (RHEL 6 / 7 : JBoss EAP (RHSA-2018:2276)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 236911 (Red Hat Update for Red Hat JBoss Enterprise Application Platform 7.1 (RHSA-2018:2276)).

Upgrading to version 6.0.0.Alpha3 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 (111486). Similar entries are available at VDB-120168, VDB-137946, VDB-137885 and VDB-137924. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Application Server Software

Name

• WildFly

Version

• 6.0.0.Alpha2

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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