CVE Vulnerabilities

CVE-2019-9741

Improper Neutralization of CRLF Sequences ('CRLF Injection')

Published: Mar 13, 2019 | Modified: Nov 07, 2023
CVSS 3.x
6.1
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N
RedHat/V2
RedHat/V3
5.3 MODERATE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Ubuntu
MEDIUM

An issue was discovered in net/http in Go 1.11.5. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the second argument to http.NewRequest with rn followed by an HTTP header or a Redis command.

Weakness

The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.

Affected Software

Name Vendor Start Version End Version
Go Golang 1.11.5 (including) 1.11.5 (including)
Red Hat Developer Tools RedHat go-toolset-1.11-0:1.11.5-2.el7 *
Red Hat Developer Tools RedHat go-toolset-1.11-golang-0:1.11.5-3.el7 *
Red Hat Enterprise Linux 8 RedHat go-toolset:rhel8-8000020190509153318.b9255456 *
Golang Ubuntu trusty *
Golang-1.10 Ubuntu bionic *
Golang-1.10 Ubuntu cosmic *
Golang-1.10 Ubuntu disco *
Golang-1.10 Ubuntu esm-infra/bionic *
Golang-1.10 Ubuntu trusty *
Golang-1.10 Ubuntu trusty/esm *
Golang-1.10 Ubuntu xenial *
Golang-1.11 Ubuntu disco *
Golang-1.11 Ubuntu upstream *
Golang-1.6 Ubuntu trusty *
Golang-1.6 Ubuntu xenial *
Golang-1.7 Ubuntu cosmic *
Golang-1.8 Ubuntu bionic *
Golang-1.8 Ubuntu cosmic *
Golang-1.8 Ubuntu esm-apps/bionic *
Golang-1.9 Ubuntu bionic *
Golang-1.9 Ubuntu cosmic *
Golang-1.9 Ubuntu esm-apps/bionic *

Potential Mitigations

References