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bdu:2022-01768

BREW-litecli-CVE-2021-32839 — StripComments filter contains a regular expression that is vulnerable to ReDOS (Regular Expression Denial of Service)

Affected: Homebrew: litecli

### Impact The formatter function that strips comments from a SQL contains a regular expression that is vulnerable to [ReDoS](https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS) (Regular Expression Denial of Service). The regular expression may cause exponential backtracking on strings containing many repetitions of '\r\n' in SQL comments.

### Patches The issues has been fixed in sqlparse 0.4.2.

### Workarounds 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.

### References This issue was discovered by GitHub team members @erik-krogh and @yoff. It was found using a [CodeQL](https://codeql.github.com/) query which identifies inefficient regular expressions. You can see the results of the query on python-sqlparse by following [this link](https://lgtm.com/query/2223658096471222354/).

### For more information If you have any questions or comments about this advisory: * Open an issue in [sqlparse issue tracker](https://github.com/andialbrecht/sqlparse/issues) * Email us at [albrecht.andi@gmail.com](mailto:albrecht.andi@gmail.com)

EUVD-2026-258295

fkie_cve-2021-32839

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.

GHSA-p5w8-wqhj-9hhf — StripComments filter contains a regular expression that is vulnerable to ReDOS (Regular Expression Denial of Service)

Affected: PyPI: sqlparse

### Patches The issues has been fixed in sqlparse 0.4.2.

gsd-2021-32839

openSUSE-SU-2021:3857-1 — Security update for python-sqlparse

Security update for python-sqlparse

PYSEC-2021-333

Affected: PyPI: sqlparse

RHSA-2022:5498 — Red Hat Security Advisory: Satellite 6.11 Release

libsolv: heap-based buffer overflow in testcase_read() in src/testcase.c foreman: Authenticate remote code execution through Sendmail configuration Satellite: Allow unintended SCA certificate to authenticate Candlepin netty: Information disclosure via the local system temporary directory netty: possible request smuggling in HTTP/2 due missing validation netty: Request smuggling via content-length header sidekiq: XSS via the queue name of the live-poll feature python-sqlparse: ReDoS via regular expression in StripComments filter libsolv: heap-based buffer overflow in pool_installable() in src/repo.h libsolv: heap-based buffer overflow in pool_disabled_solvable() in src/repo.h libsolv: heap-based buffer overflow in pool_installable_whatprovides() in src/repo.h libsolv: heap-based buffer overflow in prune_to_recommended() in src/policy.c rubygem-puma: Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') in puma logback: remote code execution through JNDI call from within its configuration file netty: control chars in header names may lead to HTTP request smuggling python-lxml: HTML Cleaner allows crafted and SVG embedded scripts to pass through django: potential bypass of an upstream access control based on URL paths libsolv: heap-overflows in resolve_dependencies function django: Denial-of-service possibility in UserAttributeSimilarityValidator django: Potential information disclosure in dictsort template filter django: Potential directory-traversal via Stor…

SUSE-SU-2021:3857-1 — Security update for python-sqlparse

Security update for python-sqlparse

UBUNTU-CVE-2021-32839

Affected: Ubuntu:22.04:LTS: sqlparse