Pylons Colander up to 1.6 URL Validator input validation

Summaryinfo

A vulnerability classified as problematic has been found in Pylons Colander up to 1.6. This impacts an unknown function of the component URL Validator. This manipulation causes input validation. This vulnerability is handled as CVE-2017-18361. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Pylons Colander up to 1.6. It has been declared as problematic. Affected by this vulnerability is some unknown processing of the component URL Validator. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. The summary by CVE is:

In Pylons Colander through 1.6, the URL validator allows an attacker to potentially cause an infinite loop thereby causing a denial of service via an unclosed parenthesis.

The bug was discovered 04/26/2017. The weakness was released 02/01/2019 (Website). The advisory is shared at github.com. This vulnerability is known as CVE-2017-18361 since 02/01/2019. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 646 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 261304 (Linux Distros Unpatched Vulnerability : CVE-2017-18361), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (261304). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• Pylons

Name

• Colander

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6

Website

• Product: https://github.com/Pylons/colander/

CPE 2.3info

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CPE 2.2info

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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