A vulnerability, which was classified as critical, has been found in Red Hat JBoss EAP 7.1.0.GA (Application Server Software). This issue affects an unknown code of the component AJP Connector. The manipulation as part of a Slash Character 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 confidentiality. The summary by CVE is:

It was found that the AJP connector in undertow, as shipped in Jboss EAP 7.1.0.GA, does not use the ALLOW_ENCODED_SLASH option and thus allow the the slash / anti-slash characters encoded in the url which may lead to path traversal and result in the information disclosure of arbitrary local files.

The bug was discovered 01/15/2018. The weakness was presented 01/24/2018 as Bug 1534343 as not defined bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. The identification of this vulnerability is CVE-2018-1048 since 12/04/2017. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful 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 was handled as a non-public zero-day exploit for at least 9 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 108324 (RHEL 7 : JBoss EAP (RHSA-2018:0480)), 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 236672 (Red Hat Update for jboss-ec2-eap package for EAP 7.1.1 (RHSA-2018:0481)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (108324). See 106589, 111708, 113195 and 114172 for similar entries.

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Type

• Application Server Software

Vendor

• Red Hat

Name

• JBoss EAP

Version

• 7.1.0.GA

License

• open-source

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• 🔍

CPE 2.2info

• 🔍

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