<p>Upgrade <code>Alpine:3.8</code> <code>ruby</code> to version 2.5.7-r0 or higher.</p>

Arbitrary Code Injection Affecting ruby package, versions <2.5.7-r0

Snyk CVSS

Attack Complexity Low

Threat Intelligence

EPSS 1.06% (84^th percentile)

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Snyk ID SNYK-ALPINE38-RUBY-486017
published 13 Nov 2019
disclosed 26 Nov 2019

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Introduced: 13 Nov 2019

CVE-2019-16254 Open this link in a new tab CWE-74 Open this link in a new tab

How to fix?

Upgrade Alpine:3.8 ruby to version 2.5.7-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby package and not the ruby package as distributed by Alpine. See How to fix? for Alpine:3.8 relevant fixed versions and status.

Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients. NOTE: this issue exists because of an incomplete fix for CVE-2017-17742, which addressed the CRLF vector, but did not address an isolated CR or an isolated LF.