CVE-2021-32763

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.

CVSS v3 6.5 MEDIUM
CVSS v2.0 4.0 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:N/I:N/A:P

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/opf/openproject/pull/9447.patch	Patch Third Party Advisory
https://github.com/opf/openproject/security/advisories/GHSA-qqvp-j6gm-q56f	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:openproject:openproject:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-07-20 17:15

Updated : 2024-02-28 18:28

NVD link : CVE-2021-32763

Mitre link : CVE-2021-32763

CVE.ORG link : CVE-2021-32763

JSON object : View

Products Affected

openproject

openproject

CWE

NVD-CWE-Other CWE-400

Uncontrolled Resource Consumption

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