Remote Code Execution (RCE) Affecting mysql2 package, versions <3.9.4


Severity

Recommended
0.0
critical
0
10

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

Threat Intelligence

Exploit Maturity
Proof of concept
EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-JS-MYSQL2-6591085
  • published10 Apr 2024
  • disclosed7 Apr 2024
  • creditVsevolod Kokorin

Introduced: 7 Apr 2024

CVE-2024-21508  (opens in a new tab)
CWE-94  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade mysql2 to version 3.9.4 or higher.

Overview

mysql2 is a mostly API compatible with mysqljs and supports majority of features.

Affected versions of this package are vulnerable to Remote Code Execution (RCE) via the readCodeFor function due to improper validation of the supportBigNumbers and bigNumberStrings values.

PoC

 {sql:`SELECT INDEX_LENGTH FROM information_schema.tables LIMIT 1`, supportBigNumbers:"console.log(1337)"}

CVSS Scores

version 3.1