CVE-2019-14809

CRITICAL

Go <1.11.13, 1.12.x <1.12.8 - Auth Bypass

Title source: llm

Description

net/url in Go before 1.11.13 and 1.12.x before 1.12.8 mishandles malformed hosts in URLs, leading to an authorization bypass in some applications. This is related to a Host field with a suffix appearing in neither Hostname() nor Port(), and is related to a non-numeric port number. For example, an attacker can compose a crafted javascript:// URL that results in a hostname of google.com.

References (13)

Core 13

Core References

Mailing List x_refsource_misc

https://groups.google.com/forum/#%21topic/golang-announce/0uuMm1BwpHE

Mailing List x_refsource_confirm

https://groups.google.com/forum/#%21topic/golang-announce/65QixT3tcmg

Exploit, Patch, Third Party Advisory x_refsource_confirm

https://github.com/golang/go/issues/29098

Mailing List, Third Party Advisory mailing-list x_refsource_bugtraq

https://seclists.org/bugtraq/2019/Aug/31

Third Party Advisory vendor-advisory x_refsource_debian

https://www.debian.org/security/2019/dsa-4503

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00076.html

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00002.html

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00011.html

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYO6E3H34C346D2E443GLXK7OK6KIYIQ/

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4BBP27PZGSY6OP6D26E5FW4GZKBFHNU7/

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00021.html

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00038.html

Vendor Advisory vendor-advisory x_refsource_redhat

https://access.redhat.com/errata/RHSA-2019:3433

Scores

CVSS v3 9.8

EPSS 0.0258

EPSS Percentile 85.8%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

Status published

Products (2)

debian/debian_linux 10.0

golang/go < 1.11.13

Published Aug 13, 2019

Tracked Since Feb 18, 2026