812512 – <dev-python/sqlparse-0.4.2: ReDOS in 'strip comments' filter

Bug 812512 - <dev-python/sqlparse-0.4.2: ReDOS in 'strip comments' filter

Summary: <dev-python/sqlparse-0.4.2: ReDOS in 'strip comments' filter

Status:	IN_PROGRESS

Alias:	None

Product:	Gentoo Security
Classification:	Unclassified
Component:	Vulnerabilities (show other bugs)
Hardware:	All Linux

Importance:	Normal minor (vote)
Assignee:	Gentoo Security

URL:	https://github.com/andialbrecht/sqlpa...
Whiteboard:	B3 [glsa?]
Keywords:

Depends on:	812518
Blocks:
	Show dependency tree

Reported:	2021-09-11 07:06 UTC by Michał Górny
Modified:	2021-09-12 13:47 UTC (History)
CC List:	1 user (show)

See Also:
Package list:
Runtime testing required:	---

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Description Michał Górny archtester

2021-09-11 07:06:52 UTC

The formatter function that strips comments from a SQL contains a regular expression that is vulnerable to ReDoS (Regular Expression Denial of Service). The regular expression may cause exponential backtracking on strings containing many repetitions of '\r\n' in SQL comments.

Comment 1 John Helmert III archtester

2021-09-11 16:28:26 UTC

Thanks!

Comment 2 Michał Górny archtester

2021-09-12 07:39:33 UTC

cleanup done