Denial of Service (DoS) vulnerability in com.fasterxml.jackson.core:jackson-databind ( CVE-2020-36518)

[abstractj]

Overview

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) via a large depth of nested objects.

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 ws package

References

GitHub Commit
GitHub Issue
GitHub PR

Describe the solution you'd like

Remediation

Upgrade com.fasterxml.jackson.core:jackson-databind to version 2.12.6.1, 2.13.2.1 or higher.

Describe alternatives you've considered

No response

Additional context

The issue has affects the Keycloak Operator

[abstractj]

@manusa I noticed that the issue was assigned to me. How can I help?

[manusa]

@manusa I noticed that the issue was assigned to me. How can I help?

Doesn't #4048 fix this one? I assigned to you so that we know you took care of it ;)

[abstractj]

@manusa got it, thanks for clarifying.

[doddisrikar]

hello, which is the release the fix for CVE(CVE-2020-36518) would be part of?

[karthickm512]

Hi, Any updates or progress on this ticket? @abstractj @manusa

[rohanKanojia]

We had upgraded to Jackson v2.13.3 in #4153 . It should be available in v6.0.0-RC1

[abstractj]

Closing this issue, considering that it was fixed on #4153