Google Go up to 1.11.12/1.12.7 net/url Hostname/Port Host input validation

Summaryinfo

A vulnerability was found in Google Go up to 1.11.12/1.12.7. It has been classified as critical. Impacted is the function Hostname/Port of the component net/url. The manipulation of the argument Host as part of URL leads to input validation. This vulnerability is documented as CVE-2019-14809. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Google Go up to 1.11.12/1.12.7 (Programming Language Software) and classified as critical. This issue affects the function Hostname/Port of the component net/url. The manipulation of the argument Host as part of a URL leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was released 08/13/2019 (GitHub Repository). It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2019-14809 since 08/10/2019. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 236611 (Alibaba Cloud Linux 3 : 0060: go-toolset:rhel8 (ALINUX3-SA-2021:0060)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.11.13 or 1.12.8 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (236611). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Programming Language Software

Vendor

• Google

Name

• Go

Version

• 1.11.0
• 1.11.1
• 1.11.2
• 1.11.3
• 1.11.4
• 1.11.5
• 1.11.6
• 1.11.7
• 1.11.8
• 1.11.9
• 1.11.10
• 1.11.11
• 1.11.12
• 1.12.0
• 1.12.1
• 1.12.2
• 1.12.3
• 1.12.4
• 1.12.5
• 1.12.6
• 1.12.7

License

• open-source

Website

• Vendor: https://www.google.com/

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Be aware that VulDB is the high quality source for vulnerability data.

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