CVE-2019-16254

ruby: HTTP response splitting in WEBrick

Published Nov 26, 2019 CVSS 3.1 · 5.3 Medium EPSS 4.6% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-2007-1 ruby2.1 security update
Debian DLA Debian DLA DLA-2027-1 jruby security update
Debian DLA Debian DLA DLA-2330-1 jruby security update
Debian DLA Debian DLA DLA-3408-1 jruby security update
Debian DSA Debian DSA DSA-4586-1 ruby2.5 security update
Debian DSA Debian DSA DSA-4587-1 ruby2.3 security update
EUVD EUVD EUVD-2019-7060 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.
Ubuntu USN Ubuntu USN USN-4201-1 Ruby vulnerabilities
History
Type Values Removed Values Added
Metrics epss

{'score': 0.00729}

epss

{'score': 0.00575}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 5, 2024, 1:10 AM
Reserved
Sep 11, 2019, 12:00 AM
Status
Modified
Published
Nov 26, 2019, 6:15 PM
Modified
Jun 17, 2026, 2:22 AM
Severity
Low
Public date
Oct 25, 2019, 12:00 AM