Arbitrary Code Injection Affecting ruby2.5 package, versions <2.5.1-1ubuntu1.6


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
1.24% (87th percentile)

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  • Snyk IDSNYK-UBUNTU1804-RUBY25-535018
  • published13 Nov 2019
  • disclosed26 Nov 2019

Introduced: 13 Nov 2019

CVE-2019-16254  (opens in a new tab)
CWE-74  (opens in a new tab)

How to fix?

Upgrade Ubuntu:18.04 ruby2.5 to version 2.5.1-1ubuntu1.6 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 Ubuntu. See How to fix? for Ubuntu:18.04 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.

CVSS Scores

version 3.1