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

Severity

0.0
critical
0
10

    Threat Intelligence

    Exploit Maturity
    Proof of concept
    EPSS
    0.04% (9th percentile)

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  • Snyk ID SNYK-JS-MYSQL2-6591085
  • published 10 Apr 2024
  • disclosed 7 Apr 2024
  • credit Vsevolod Kokorin
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Introduced: 7 Apr 2024

CVE-2024-21508 Open this link in a new tab
CWE-94 Open this link 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
Expand this section

Snyk

9.8 critical
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High