Arbitrary Code Injection Affecting ruby2.5 package, versions <2.5.5-3+deb10u1


0.0
medium

Snyk CVSS

    Attack Complexity Low

    Threat Intelligence

    EPSS 1.06% (84th percentile)
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NVD
5.3 medium
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SUSE
6.8 medium
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Red Hat
5.3 medium

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  • Snyk ID SNYK-DEBIAN10-RUBY25-534941
  • published 13 Nov 2019
  • disclosed 26 Nov 2019

How to fix?

Upgrade Debian:10 ruby2.5 to version 2.5.5-3+deb10u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ruby2.5 package and not the ruby2.5 package as distributed by Debian. See How to fix? for Debian:10 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.