A vulnerability classified as problematic has been found in Undertow (affected version unknown). This affects the function write. The manipulation of the argument writevBuffer as part of a Request leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

An information leak vulnerability was found in Undertow. If all headers are not written out in the first write() call then the code that handles flushing the buffer will always write out the full contents of the writevBuffer buffer, which may contain data from previous requests.

The bug was discovered 09/18/2018. The weakness was shared 09/18/2018 as confirmed bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2018-14642 since 07/27/2018. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 237128 (Red Hat Update for Red Hat JBoss Enterprise Application Platform 7.1.6 for RHEL 7 (RHSA-2019:0365)).

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

The entries 123060, 129525 and 132483 are related to this item.

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• Undertow

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• free

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• 🔍

CPE 2.2info

• 🔍

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