Vulnerability identifier: #VU20068

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-14642

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Undertow
Server applications / Web servers

Vendor: Red Hat Inc.

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to incorrect processing of HTTP response headers during buffer flushing. A remote attacker can view contents of HTTP responses from previous requests.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Undertow: 2.0.0 - 2.0.18

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External links
http://access.redhat.com/errata/RHSA-2019:0362
http://access.redhat.com/errata/RHSA-2019:0364
http://access.redhat.com/errata/RHSA-2019:0365
http://access.redhat.com/errata/RHSA-2019:0380
http://access.redhat.com/errata/RHSA-2019:1106
http://access.redhat.com/errata/RHSA-2019:1107
http://access.redhat.com/errata/RHSA-2019:1108
http://access.redhat.com/errata/RHSA-2019:1140
http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14642

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.