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CVE-2021-32763
Date: July 20, 2021
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.
Language: Ruby
Severity Score
Severity Score
Weakness Type (CWE)
Uncontrolled Resource Consumption
CWE-400Insufficient Information
NVD-CWE-noinfoCVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | LOW |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | NONE |
| Integrity (I): | NONE |
| Availability (A): | LOW |
CVSS v2
| Base Score: |
|
|---|---|
| Access Vector (AV): | NETWORK |
| Access Complexity (AC): | LOW |
| Authentication (AU): | SINGLE |
| Confidentiality (C): | NONE |
| Integrity (I): | NONE |
| Availability (A): | PARTIAL |
| Additional information: |