CRLF injection in wget - CVE-2017-6508

Vulnerability identifier: #VU8989

CSH Severity: Low

CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-6508

CWE-ID: CWE-113

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform content spoofing attack.

The vulnerability exists due to an error in the url_parse() function in url.c in Wget through 1.19.1. A remote attacker can inject arbitrary HTTP headers via CRLF sequences in the host subcomponent of a URL and spoof contents of the targeted website.

wget
Arch Linux
Amazon Linux AMI
Gentoo Linux
Fedora
wget (Alpine package)
wget

Update to version 1.19.1.

wget (Alpine package) - update to 1.17.1-r2
wget - addressed in versions 1.18-2.fc24, 1.18-3.fc25, 1.19.1-3.fc26

• http://lists.gnu.org/archive/html/bug-wget/2017-03/msg00018.html
• http://git.savannah.gnu.org/cgit/wget.git/commit/?id=4d729e322fae359a1aefaafec1144764a54e8ad4

• Arch Linux update for wget
• Amazon Linux AMI update for wget
• Gentoo update for GNU Wget
• CRLF injection in wget (Alpine package)
• Fedora 25 update for wget
• Fedora 24 update for wget
• Fedora 26 update for wget