CVE-2021-32839

published 2021-09-20

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…

Priority P3 41 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C N I N A H

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.

Affected

8 ranges

Vendor	Product	Version range	Fixed in
andialbrecht	sqlparse	—	—
debian	sqlparse	< sqlparse 0.4.2-1 (bookworm)	sqlparse 0.4.2-1 (bookworm)
sqlparse_project	sqlparse	>= 0 < 0.4.1-1+deb11u1	0.4.1-1+deb11u1
sqlparse_project	sqlparse	>= 0 < 0.4.2-1	0.4.2-1
sqlparse_project	sqlparse	>= 0 < 0.4.2-1	0.4.2-1
sqlparse_project	sqlparse	>= 0 < 0.4.2-1	0.4.2-1
sqlparse_project	sqlparse	>= 0.4.0 < 0.4.2	0.4.2
sqlparse_project	sqlparse	>= 0.4.0 < 0.4.2	0.4.2

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd v2.0 5.0 MEDIUM AV:N/AC:L/Au:N/C:N/I:N/A:P

osv 7.5 HIGH

vendor_debian 7.5 HIGH

vendor_redhat 7.5 HIGH

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CWE-400