Denial of Service (DoS) Affecting silverstripe/graphql package, versions >=4.1.1, <4.1.2>=4.2.2, <4.2.3


Severity

Recommended
0.0
high
0
10

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

Threat Intelligence

EPSS
0.2% (59th percentile)

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  • Snyk IDSNYK-PHP-SILVERSTRIPEGRAPHQL-3361720
  • published16 Mar 2023
  • disclosed16 Mar 2023
  • creditGuy Sartorelli

Introduced: 16 Mar 2023

CVE-2023-28104  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade silverstripe/graphql to version 4.1.2, 4.2.3 or higher.

Overview

silverstripe/graphql is a GraphQL server for SilverStripe models and other data.

Affected versions of this package are vulnerable to Denial of Service (DoS) via a specially crafted graphql query. This mostly affects websites with publicly exposed and particularly large/complex graphql schemas.

Note: If the Silverstripe CMS project does not expose a public facing graphql schema, a user account is required to trigger the DDOS attack. If the project is hosted behind a content delivery network (CDN), this will likely further mitigate the risk.

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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