Executive Summary

Summary
Title Openfire contains an uncontrolled resource consumption vulnerability
Informations
Name VU#495476 First vendor Publication 2014-04-16
Vendor VU-CERT Last vendor Modification 2014-04-23
Severity (Vendor) N/A Revision M

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Cvss Base Score 7.8 Attack Range Network
Cvss Impact Score 6.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Vulnerability Note VU#495476

Openfire contains an uncontrolled resource consumption vulnerability

Original Release date: 16 Apr 2014 | Last revised: 23 Apr 2014

Overview

Openfire 3.9.1, and possibly earlier versions, contains an uncontrolled resource consumption (CWE-400) vulnerability when using XMPP DEFLATE message compression.

Description

Openfire 3.9.1, and possibly earlier versions, contains an uncontrolled resource consumption (CWE-400) vulnerability when using XMPP DEFLATE message compression. It has been reported that a highly compressed XMPP message of 4MB that uncompresses to 4GB may cause a resource exhaustion denial of service. The highly compressed XMPP messages may be sent in parallel to enhance the denial of service.

Impact

A remote unauthenticated attacker may be able to cause a denial-of-service condition.

Solution

We are currently unaware of a practical solution to this problem. A fix is available in the development branch of Openfire but a stable release is not available yet. Please consider the following workarounds.

Restrict Network Access

As a general good security practice, only allow connections from trusted hosts and networks if possible. Restricting access would prevent an attacker from connecting to the service from a blocked network location.

Disable XMPP Compression

Navigate to the menu Server -> Server Settings -> Compression Settings -> Client Compression Policy and check the option Not Available - Clients will not receive the option to use compressed traffic.

Vendor Information (Learn More)

VendorStatusDate NotifiedDate Updated
OpenfireAffected25 Feb 201416 Apr 2014
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

GroupScoreVector
Base7.8AV:N/AC:L/Au:N/C:N/I:N/A:C
Temporal7.0E:F/RL:W/RC:C
Environmental5.3CDP:ND/TD:M/CR:ND/IR:ND/AR:ND

References

  • https://cwe.mitre.org/data/definitions/400.html
  • http://www.igniterealtime.org/projects/openfire/
  • http://community.igniterealtime.org/thread/52317
  • http://fisheye.igniterealtime.org/changelog/openfiregit?cs=3aec383e07ee893b77396fe946766bbd3758af77
  • http://xmpp.org/resources/security-notices/uncontrolled-resource-consumption-with-highly-compressed-xmpp-stanzas/

Credit

Thanks to Giancarlo Pellegrino for reporting this vulnerability.

This document was written by Jared Allar.

Other Information

  • CVE IDs:CVE-2014-2741
  • Date Public:16 Apr 2014
  • Date First Published:16 Apr 2014
  • Date Last Updated:23 Apr 2014
  • Document Revision:20

Feedback

If you have feedback, comments, or additional information about this vulnerability, please send us email.

Original Source

Url : http://www.kb.cert.org/vuls/id/495476

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-264 Permissions, Privileges, and Access Controls

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 31

Nessus® Vulnerability Scanner

Date Description
2014-07-14 Name : The remote host contains an application that is affected by a denial of servi...
File : openfire_3_9_2.nasl - Type : ACT_GATHER_INFO
2014-07-01 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201406-35.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
2
Date Informations
2014-07-15 13:25:45
  • Multiple Updates
2014-04-23 21:19:37
  • Multiple Updates
2014-04-17 00:16:30
  • First insertion