Denial of Service (DoS) Affecting com.fasterxml.jackson.core:jackson-databind package, versions [2.13.0,2.13.1) [2.10.0.pr1,2.12.6)



    Attack Complexity High
    Availability High

    Threat Intelligence

    EPSS 0.07% (27th percentile)
Expand this section
7.5 high
Expand this section
Red Hat
7.5 high

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  • published 26 Dec 2021
  • disclosed 25 Dec 2021
  • credit Unknown

How to fix?

Upgrade com.fasterxml.jackson.core:jackson-databind to version 2.13.1, 2.12.6 or higher.


com.fasterxml.jackson.core:jackson-databind is a library which contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor.

Affected versions of this package are vulnerable to Denial of Service (DoS) when using JDK serialization to serialize and deserialize JsonNode values. It is possible for the attacker to send a 4-byte length payload, with a value of Integer.MAX_VALUE , that will eventually cause large buffer allocation and out of heap memory.


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 ws package