CVE-2021-32763
Assigner: GitHub_M
Published: 2021-07-20T16:50:10
State: PUBLISHED
affected: product: openproject
vendor: opf
versions: status: affected
version: < 11.3.3
descriptions: value: OpenProject is open-source, web-based project management software. In versions prior to 11.3.3, the `MessagesController` class of OpenProject has a `quote` method that implements the logic behind the Quote button in the discussion forums, and it uses a regex to strip `<pre>` tags from the message being quoted. The `(.|\s)` part can match a space character in two ways, so an unterminated `<pre>` tag containing `n` spaces causes Ruby's regex engine to backtrack to try 2<sup>n</sup> states in the NFA. This will result in a Regular Expression Denial of Service. The issue is fixed in OpenProject 11.3.3. As a workaround, one may install the patch manually.
metrics: cvssV3_1: attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: LOW
baseScore: 4.3
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
version: 3.1
problemTypes: descriptions: cweId: CWE-400
description: CWE-400: Uncontrolled Resource Consumption
type: CWE
source: advisory: GHSA-qqvp-j6gm-q56f
discovery: UNKNOWN
title: Regular Expression Denial of Service in OpenProject forum messages