Description
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.
Remediation
References
https://access.redhat.com/errata/RHSA-2019:0362
https://access.redhat.com/errata/RHSA-2019:0364
https://access.redhat.com/errata/RHSA-2019:0365
https://access.redhat.com/errata/RHSA-2019:0380
https://access.redhat.com/errata/RHSA-2019:1106
https://access.redhat.com/errata/RHSA-2019:1107
https://access.redhat.com/errata/RHSA-2019:1108
https://access.redhat.com/errata/RHSA-2019:1140
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14642
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