Uncontrolled Recursion Affecting sqlparse package, versions [,0.5.0)


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    Exploit Maturity
    Proof of concept
    EPSS
    0.07% (31st percentile)

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  • Snyk ID SNYK-PYTHON-SQLPARSE-6615674
  • published 16 Apr 2024
  • disclosed 15 Apr 2024
  • credit uriyay-jfrog

How to fix?

Upgrade sqlparse to version 0.5.0 or higher.

Overview

Affected versions of this package are vulnerable to Uncontrolled Recursion due to the parsing of heavily nested lists. An attacker can cause the application to crash by submitting a specially crafted list that triggers a RecursionError.

Note: The impact depends on the use, so anyone parsing a user input with sqlparse.parse() is affected.

PoC


import sqlparse
sqlparse.parse('[' * 10000 + ']' * 10000)

CVSS Scores

version 3.1
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Snyk

Recommended
7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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Red Hat

7.5 high
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SUSE

7.5 high