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.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-4000-1 sqlparse security update
EUVD EUVD EUVD-2021-0250 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.
Github GHSA Github GHSA GHSA-p5w8-wqhj-9hhf StripComments filter contains a regular expression that is vulnerable to ReDOS (Regular Expression Denial of Service)
Ubuntu USN Ubuntu USN USN-5085-1 SQL parse vulnerability
Fixes

Solution

No solution given by the vendor.


Workaround

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History

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2024-08-03T23:33:55.847Z

Reserved: 2021-05-12T00:00:00

Link: CVE-2021-32839

cve-icon Vulnrichment

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cve-icon NVD

Status : Modified

Published: 2021-09-20T17:15:09.067

Modified: 2024-11-21T06:07:51.463

Link: CVE-2021-32839

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-09-10T00:00:00Z

Links: CVE-2021-32839 - Bugzilla

cve-icon OpenCVE Enrichment

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