Denial of Service (DoS) Affecting tornado package, versions [,5.1)
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Test your applications- Snyk ID SNYK-PYTHON-TORNADO-40792
- published 16 Aug 2018
- disclosed 20 May 2018
- credit Unknown
Introduced: 20 May 2018
CVE-2018-1000518 Open this link in a new tabHow to fix?
Upgrade tornado to version 5.1 or higher.
Overview
tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Affected versions of this package are vulnerable to Denial of Service (DoS) attacks due to not enforcing max_size when decompressing compressed zip messages.
Details
Denial of Service (DoS) describes a family of attacks, all aimed at making a system inaccessible to its intended and legitimate users.
Unlike other vulnerabilities, DoS attacks usually do not aim at breaching security. Rather, they are focused on making websites and services unavailable to genuine users resulting in downtime.
One popular Denial of Service vulnerability is DDoS (a Distributed Denial of Service), an attack that attempts to clog network pipes to the system by generating a large volume of traffic from many machines.
When it comes to open source libraries, DoS vulnerabilities allow attackers to trigger such a crash or crippling of the service by using a flaw either in the application code or from the use of open source libraries.
Two common types of DoS vulnerabilities:
High CPU/Memory Consumption- An attacker sending crafted requests that could cause the system to take a disproportionate amount of time to process. For example, commons-fileupload:commons-fileupload.
Crash - An attacker sending crafted requests that could cause the system to crash. For Example, npm
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