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CVE-2021-32839

CVE-2021-32839 · Regular Expression Denial of Service in sqlparse

This page contains facts from public vulnerability sources. Check the original advisory before updating.

sqlparse is a non-validating SQL parser module for Python. In sqlparse versions 0.4.0 and 0.4.1 there is a regular Expression Denial of Service in sqlparse vulnerability. The regular expression may cause exponential backtracking on strings containing many repetitions of '\r\n' in SQL comments. Only the formatting feature that removes comments from SQL statements is affected by this regular expression. As a workaround don't use the sqlformat.format function with keyword strip_comments=True or the --strip-comments command line flag when using the sqlformat command line tool. The issues has been fixed in sqlparse 0.4.2.

CVSS 7.5 · High · EPSS 2.3% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • sqlparse

    Versions
    • >= 0.4.0, < 0.4.2: Affected

    No fix published

  • sqlparse Debian:12

    Affected ranges
    • ECOSYSTEM: < 0.4.2-1

    Update to 0.4.2-1

  • sqlparse Debian:13

    Affected ranges
    • ECOSYSTEM: < 0.4.2-1

    Update to 0.4.2-1

  • sqlparse Debian:14

    Affected ranges
    • ECOSYSTEM: < 0.4.2-1

    Update to 0.4.2-1

  • sqlparse PyPI

    Versions
    • 0.4.0
    • 0.4.1
    Affected ranges
    • ECOSYSTEM: ≥ 0.4.0, < 0.4.2

    Update to 0.4.2

  • sqlparse PyPI

    Versions
    • 0.4.0
    • 0.4.1
    Affected ranges
    • GIT: ≥ 1499cffcd7c4d635b4297b44d48fb4fe94cf988e, < 8238a9e450ed1524e40cb3a8b0b3c00606903aeb
    • ECOSYSTEM: ≥ 0.4.0, < 0.4.2

    Update to 0.4.2

  • sqlparse Ubuntu:22.04:LTS

    Affected ranges
    • ECOSYSTEM: < 0.4.1-1ubuntu1

    Update to 0.4.1-1ubuntu1

Original sources

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