Arbitrary Code Injection Affecting ruby package, versions [,2.3.1)[2.4.0,2.4.8)[2.5.0,2.5.7)[2.6.0,2.6.5)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.78% (82nd percentile)

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  • Snyk IDSNYK-UNMANAGED-RUBY-2370159
  • published26 Jan 2022
  • disclosed26 Nov 2019
  • creditUnknown

Introduced: 26 Nov 2019

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

How to fix?

Upgrade ruby to version 2.3.1, 2.4.8, 2.5.7, 2.6.5 or higher.

Overview

Affected versions of this package are vulnerable to Arbitrary Code Injection. 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.

References

CVSS Scores

version 3.1