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Mend.io Vulnerability Database

CVE-2019-16254

Date: November 25, 2019

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.

Language: Ruby

Severity Score

5.3

Related Resources (22)

Url: https://www.ruby-lang.org/ja/news/2019/10/01/ruby-2-4-8-released/

Url: https://security-tracker.debian.org/tracker/CVE-2019-16254

Url: https://lists.debian.org/debian-lts-announce/2019/12/msg00009.html

Url: https://hackerone.com/reports/331984

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2019-16254

Url: https://www.ruby-lang.org/ja/news/2019/10/01/ruby-2-6-5-released/

Url: https://access.redhat.com/security/cve/CVE-2019-16254

Url: https://www.ruby-lang.org/ja/news/2019/10/01/ruby-2-5-7-released/

Url: https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html

Url: https://nvd.nist.gov/vuln/detail/CVE-2019-16254

Url: https://www.ruby-lang.org/ja/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254/

Url: https://security.alpinelinux.org/vuln/CVE-2019-16254

Url: https://seclists.org/bugtraq/2019/Dec/31

Url: https://seclists.org/bugtraq/2019/Dec/32

Url: https://www.debian.org/security/2019/dsa-4586

Url: https://www.debian.org/security/2019/dsa-4587

Url: https://lists.debian.org/debian-lts-announce/2019/11/msg00025.html

Url: https://security.gentoo.org/glsa/202003-06

Url: http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00041.html

Url: https://lists.debian.org/debian-lts-announce/2020/08/msg00027.html

Url: https://www.oracle.com/security-alerts/cpujan2020.html

Url: https://www.mend.io/vulnerability-database/CVE-2019-16254

Severity Score

5.3

Weakness Type (CWE)

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-74

CVSS v3.1

Base Score:	5.3
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	LOW
Availability (A):	NONE

CVSS v2

Base Score:	5.0
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	PARTIAL
Availability (A):	NONE
Additional information:

Mend.io Vulnerability Database

We found results for “”

CVE-2019-16254

Date: November 25, 2019

Language: Ruby

Severity Score

Related Resources (22)

Severity Score

Weakness Type (CWE)

CVSS v3.1

CVSS v2

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