| Name | CVE-2021-32839 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 994841 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| sqlparse (PTS) | buster | 0.2.4-1 | fixed |
| buster (security) | 0.2.4-1+deb10u1 | fixed |
| bullseye | 0.4.1-1 | vulnerable |
| bookworm | 0.4.2-1 | fixed |
| sid, trixie | 0.4.4-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| sqlparse | source | stretch | (not affected) | | | |
| sqlparse | source | buster | (not affected) | | | |
| sqlparse | source | (unstable) | 0.4.2-1 | | | 994841 |
Notes
[bullseye] - sqlparse <no-dsa> (Minor issue)
[buster] - sqlparse <not-affected> (Vulnerable code introduced later)
[stretch] - sqlparse <not-affected> (Vulnerable code introduced later)
https://github.com/andialbrecht/sqlparse/security/advisories/GHSA-p5w8-wqhj-9hhf
Introduced by: https://github.com/andialbrecht/sqlparse/commit/1499cffcd7c4d635b4297b44d48fb4fe94cf988e (0.4.0)
Fixed by: https://github.com/andialbrecht/sqlparse/commit/8238a9e450ed1524e40cb3a8b0b3c00606903aeb (0.4.2)