Denial of Service (DoS) Affecting com.charleskorn.kaml:kaml package, versions [,0.53.0)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.16% (53rd percentile)

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  • Snyk IDSNYK-JAVA-COMCHARLESKORNKAML-3365674
  • published20 Mar 2023
  • disclosed20 Mar 2023
  • creditGareth Coles

Introduced: 20 Mar 2023

CVE-2023-28118  (opens in a new tab)
CWE-776  (opens in a new tab)

How to fix?

Upgrade com.charleskorn.kaml:kaml to version 0.53.0 or higher.

Overview

com.charleskorn.kaml:kaml is a YAML support for kotlinx.serialization.

Affected versions of this package are vulnerable to Denial of Service (DoS) when parsing input containing anchors and aliases. Attackers can trigger excessive memory consumption and a crash with a billion laughs attack.

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

CVSS Scores

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