Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Golang | Go | < 1.11.13 |
| Debian | Debian Linux | 10.0 |
References
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00076.html
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00002.html
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00011.html
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00038.html
- https://access.redhat.com/errata/RHSA-2019:3433
- https://github.com/golang/go/issues/29098ExploitPatchThird Party Advisory
- https://groups.google.com/forum/#%21topic/golang-announce/0uuMm1BwpHE
- https://groups.google.com/forum/#%21topic/golang-announce/65QixT3tcmg
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://seclists.org/bugtraq/2019/Aug/31Mailing ListThird Party Advisory
- https://www.debian.org/security/2019/dsa-4503Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00076.html
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00002.html
FAQ
What is CVE-2019-14809?
CVE-2019-14809 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 appeari...
How severe is CVE-2019-14809?
CVE-2019-14809 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2019-14809?
Check the references section above for vendor advisories and patch information. Affected products include: Golang Go, Debian Debian Linux.