#VU20066 Cleartext storage of sensitive information in Undertow - CVE-2019-3888

Vulnerability identifier: #VU20066

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-3888

CWE-ID: CWE-312

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Undertow
Server applications / Web servers

Vendor: Red Hat Inc.

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to the Connectors.executeRootHandler:402 logs the HttpServerExchange object at ERROR level using UndertowLogger.REQUEST_LOGGER.undertowRequestFailed(t, exchange), which includes logging of user credentials. A local user can view contents of log files and gain access to credentials in plain text that are stored in them.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Undertow: 2.0.0.Alpha1 - 2.0.20

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External links
https://www.securityfocus.com/bid/108739
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3888

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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