Denial of Service (DoS) Affecting websocket package, versions <0.26.5


Severity

Recommended
0.0
high
0
10

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

Threat Intelligence

EPSS
0.13% (48th percentile)

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  • Snyk IDSNYK-RUST-WEBSOCKET-2964951
  • published2 Aug 2022
  • disclosed1 Aug 2022
  • creditEvan Richter, Cargo Fuzz, Mayhem

Introduced: 1 Aug 2022

CVE-2022-35922  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade websocket to version 0.26.5 or higher.

Overview

websocket is a WebSocket (RFC6455) library written in Rust.

Affected versions of this package are vulnerable to Denial of Service (DoS) due to an allocation failure in Vec::with_capacity during dataframe parsing, when untrusted WebSocket connection can lead to out-of-memory in the client or the server.

Note: This vulnerability affects only sync (non-Tokio) implementation

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

CVSS Scores

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