CVE-2019-16254medium
New! CVE Severity Now Using CVSS v3
The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
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.
References
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00041.html
https://hackerone.com/reports/331984
https://lists.debian.org/debian-lts-announce/2019/11/msg00025.html
https://lists.debian.org/debian-lts-announce/2019/12/msg00009.html
https://lists.debian.org/debian-lts-announce/2020/08/msg00027.html
https://seclists.org/bugtraq/2019/Dec/31
https://seclists.org/bugtraq/2019/Dec/32
https://security.gentoo.org/glsa/202003-06
https://www.debian.org/security/2019/dsa-4586
https://www.debian.org/security/2019/dsa-4587
https://www.oracle.com/security-alerts/cpujan2020.html
https://www.ruby-lang.org/ja/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254/
https://www.ruby-lang.org/ja/news/2019/10/01/ruby-2-4-8-released/
https://www.ruby-lang.org/ja/news/2019/10/01/ruby-2-5-7-released/
https://www.ruby-lang.org/ja/news/2019/10/01/ruby-2-6-5-released/
Details
Source: MITRE
Published: 2019-11-26
Updated: 2020-08-16
Type: CWE-74
Risk Information
CVSS v2
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
CVSS v3
Base Score: 5.3
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Impact Score: 1.4
Exploitability Score: 3.9
Severity: MEDIUM
Vulnerable Software
Configuration 1
OR
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* versions up to 2.3.0 (inclusive)
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* versions from 2.4.0 to 2.4.7 (inclusive)
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* versions from 2.5.0 to 2.5.6 (inclusive)
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* versions from 2.6.0 to 2.6.4 (inclusive)
Configuration 2
OR
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 151449 | Oracle Linux 8 : ruby:2.6 (ELSA-2021-2588) | Nessus | Oracle Linux Local Security Checks | high |
| 151284 | Oracle Linux 8 : ruby:2.5 (ELSA-2021-2587) | Nessus | Oracle Linux Local Security Checks | high |
| 151147 | CentOS 8 : ruby:2.5 (CESA-2021:2587) | Nessus | CentOS Local Security Checks | high |
| 151146 | CentOS 8 : ruby:2.6 (CESA-2021:2588) | Nessus | CentOS Local Security Checks | high |
| 151143 | RHEL 8 : ruby:2.6 (RHSA-2021:2588) | Nessus | Red Hat Local Security Checks | high |
| 151141 | RHEL 8 : ruby:2.5 (RHSA-2021:2587) | Nessus | Red Hat Local Security Checks | high |
| 140906 | EulerOS 2.0 SP3 : ruby (EulerOS-SA-2020-2139) | Nessus | Huawei Local Security Checks | high |
| 140096 | Amazon Linux AMI : ruby24 (ALAS-2020-1422) | Nessus | Amazon Linux Local Security Checks | high |
| 139628 | Debian DLA-2330-1 : jruby security update | Nessus | Debian Local Security Checks | high |
| 137599 | SUSE SLES12 Security Update : ruby2.1 (SUSE-SU-2020:1570-1) | Nessus | SuSE Local Security Checks | high |
| 136232 | EulerOS Virtualization for ARM 64 3.0.2.0 : ruby (EulerOS-SA-2020-1529) | Nessus | Huawei Local Security Checks | high |
| 135605 | EulerOS Virtualization 3.0.2.2 : ruby (EulerOS-SA-2020-1443) | Nessus | Huawei Local Security Checks | critical |
| 135161 | openSUSE Security Update : ruby2.5 (openSUSE-2020-395) | Nessus | SuSE Local Security Checks | medium |
| 134824 | SUSE SLED15 / SLES15 Security Update : Recommended update for ruby2.5 (SUSE-SU-2020:0737-1) | Nessus | SuSE Local Security Checks | medium |
| 134473 | GLSA-202003-06 : Ruby: Multiple vulnerabilities | Nessus | Gentoo Local Security Checks | high |
| 133931 | EulerOS 2.0 SP5 : ruby (EulerOS-SA-2020-1130) | Nessus | Huawei Local Security Checks | medium |
| 132805 | EulerOS Virtualization for ARM 64 3.0.5.0 : ruby (EulerOS-SA-2020-1051) | Nessus | Huawei Local Security Checks | high |
| 132624 | EulerOS 2.0 SP8 : ruby (EulerOS-SA-2020-1031) | Nessus | Huawei Local Security Checks | high |
| 132109 | Debian DSA-4587-1 : ruby2.3 - security update | Nessus | Debian Local Security Checks | high |
| 132108 | Debian DSA-4586-1 : ruby2.5 - security update | Nessus | Debian Local Security Checks | high |
| 131960 | Debian DLA-2027-1 : jruby security update | Nessus | Debian Local Security Checks | high |
| 131392 | Ubuntu 16.04 LTS / 18.04 LTS / 19.04 / 19.10 : Ruby vulnerabilities (USN-4201-1) | Nessus | Ubuntu Local Security Checks | high |
| 131292 | Debian DLA-2007-1 : ruby2.1 security update | Nessus | Debian Local Security Checks | high |
| 129549 | FreeBSD : ruby -- multiple vulnerabilities (f7fcb75c-e537-11e9-863e-b9b7af01ba9e) | Nessus | FreeBSD Local Security Checks | high |