Denial of Service (DoS) Affecting com.typesafe.play:play_2.12 package, versions [2.8.3, 2.8.16)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published3 Jun 2022
- disclosed3 Jun 2022
- creditGerald Benischke (@beny23), Greg Methvin (@gmethvin), Billy Autrey (@BillyAutrey)
Introduced: 3 Jun 2022
CVE-2022-31018 (opens in a new tab)How to fix?
Upgrade com.typesafe.play:play_2.12 to version 2.8.16 or higher.
Overview
com.typesafe.play:play_2.12 is a library for building scalable web applications with Java and Scala.
Affected versions of this package are vulnerable to Denial of Service (DoS) which can occur when using either the Form#bindFromRequest method on a JSON request body or the Form#bind method directly on a JSON value. If the JSON data being bound to the form contains a deeply-nested JSON object or array, the form binding implementation may consume all available heap space and cause an OutOfMemoryError. If executing on the default dispatcher and akka.jvm-exit-on-fatal-error is enabled—as it is by default—then this can crash the application process. Form.bindFromRequest is vulnerable when using any body parser that produces a type of AnyContent or JsValue in Scala, or one that can produce a JsonNode in Java. This includes Play's default body parser.
Workaround
Applications the do to not need to parse a request body of type application/json can switch from the default body parser to another body parser that supports only the specific type of body they expect.
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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