sqlparse: CVE-2021-32839

Debian Bug report logs - #994841
sqlparse: CVE-2021-32839

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: sqlparse: CVE-2021-32839

Date: Tue, 21 Sep 2021 21:03:27 +0200

Source: sqlparse
Version: 0.4.1-1
Severity: grave
Tags: security upstream
Justification: user security hole
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for sqlparse.

CVE-2021-32839[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2021-32839
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32839
[1] https://github.com/andialbrecht/sqlparse/security/advisories/GHSA-p5w8-wqhj-9hhf
[2] https://github.com/andialbrecht/sqlparse/commit/8238a9e450ed1524e40cb3a8b0b3c00606903aeb

Regards,
Salvatore

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