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             AUSCERT External Security Bulletin Redistribution

                               ESB-2023.0633
 Jira Service Management Server and Data Center Advisory (CVE-2023-22501)
                              3 February 2023

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Jira Service Management Server
                   Jira Service Data Center
Publisher:         Atlassian
Operating System:  Windows
                   Linux variants
Resolution:        Patch/Upgrade
CVE Names:         CVE-2023-22501  

Original Bulletin: 
   https://confluence.atlassian.com/jira/jira-service-management-server-and-data-center-advisory-2023-02-01-1188786458.html

Comment: CVSS (Max):  None available when published

- --------------------------BEGIN INCLUDED TEXT--------------------

+----------------+------------------------------------------------------------+
|    Summary     |CVE-2023-22501 - Broken Authentication vulnerability in Jira|
|                |Service Management                                          |
+----------------+------------------------------------------------------------+
|Advisory Release|01 February 2023 10:00 AM PDT (Pacific Time, -7 hours)      |
|      Date      |                                                            |
+----------------+------------------------------------------------------------+
|                |  o Jira Service Management Server                          |
|    Product     |                                                            |
|                |  o Jira Service Management Data Center                     |
+----------------+------------------------------------------------------------+
|   CVE ID(s)    |CVE-2023-22501                                              |
+----------------+------------------------------------------------------------+

Summary of Vulnerability

This advisory discloses a critical severity security vulnerability which was
introduced in version 5.3.0 of Jira Service Management Server and Data Center.
The following versions are affected by this vulnerability:

  o 5.3.0

  o 5.3.1

  o 5.3.2

  o 5.4.0

  o 5.4.1

  o 5.5.0

An authentication vulnerability was discovered in Jira Service Management
Server and Data Center which allows an attacker to impersonate another user and
gain access to a Jira Service Management instance under certain circumstances.
With write access to a User Directory and outgoing email enabled on a Jira
Service Management instance, an attacker could gain access to signup tokens
sent to users with accounts that have never been logged into. Access to these
tokens can be obtained in two cases:

  o If the attacker is included on Jira issues or requests with these users, or

  o If the attacker is forwarded or otherwise gains access to emails containing
    a "View Request" link from these users.

Bot accounts are particularly susceptible to this scenario. On instances with
single sign-on, external customer accounts can be affected in projects where
anyone can create their own account.


The issue can be tracked here: JSDSERVER-12312 - Getting issue details... 
STATUS

+-----------------------------------------------------------------------------+
|Atlassian Cloud sites are not affected.                                      |
|                                                                             |
|If your Jira site is accessed via an atlassian.net domain, it is hosted by   |
|Atlassian and you are not affected by the vulnerability.                     |
+-----------------------------------------------------------------------------+

Severity

Atlassian rates the severity level of this vulnerability as critical, according
to the scale published in our Atlassian severity levels. The scale allows us to
rank the severity as critical, high, moderate or low.

This is our assessment and you should evaluate its applicability to your own IT
environment.

Affected Versions

Jira Service Management Server and Data Center versions 5.3.0 to 5.3.1 and
5.4.0 to 5.5.0 are affected by this vulnerability.

+----------------------------------------------+-----------------+
|                   Product                    |Affected Versions|
+----------------------------------------------+-----------------+
|                                              |  o 5.3.0        |
|                                              |                 |
|                                              |  o 5.3.1        |
|                                              |                 |
|                                              |  o 5.3.2        |
|Jira Service Management Server and Data Center|                 |
|                                              |  o 5.4.0        |
|                                              |                 |
|                                              |  o 5.4.1        |
|                                              |                 |
|                                              |  o 5.5.0        |
+----------------------------------------------+-----------------+

Fixed Versions

+----------------------------------------------+------------------+
|                   Product                    |  Fixed Versions  |
+----------------------------------------------+------------------+
|                                              |  o 5.3.3         |
|                                              |                  |
|                                              |  o 5.4.2         |
|Jira Service Management Server and Data Center|                  |
|                                              |  o 5.5.1         |
|                                              |                  |
|                                              |  o 5.6.0 or later|
+----------------------------------------------+------------------+

What You Need to Do

Atlassian recommends that you upgrade each of your affected installations to
one of the listed fixed versions (or any later version) above (see the "Fixed
Versions" section of this page for details). For a full description of the
latest version of Jira Service Management Server and Data Center, see the
release notes. You can download the latest version of Jira Service Management
and Data Center from the download center. For Frequently Asked Questions (FAQ),
click here.

Mitigation

Installing a fixed version of Jira Service Management is the recommended way to
remediate this vulnerability. If you are unable to immediately upgrade Jira
Service Management, you can manually upgrade the version-specific
servicedesk-variable-substitution-plugin JAR file as a temporary workaround.

+-----------------+-----------------------------------------------------------+
|  Jira Service   |                                                           |
|   Management    |                         JAR File                          |
|    Versions     |                                                           |
+-----------------+-----------------------------------------------------------+
|5.5.0            |[placeholde]                                               |
|                 |servicedesk-variable-substitution-plugin-5.5.1-REL-0005.jar|
+-----------------+-----------------------------------------------------------+
|5.4.0, 5.4.1     |[placeholde]                                               |
|                 |servicedesk-variable-substitution-plugin-5.4.2-REL-0005.jar|
+-----------------+-----------------------------------------------------------+
|5.3.0, 5.3.1,    |[placeholde]                                               |
|5.3.2            |servicedesk-variable-substitution-plugin-5.3.3-REL-0001.jar|
+-----------------+-----------------------------------------------------------+

To update the servicedesk-variable-substitution-plugin JAR file:

 1. Download the version-specific JAR file from the table above.
 2. Stop Jira.
 3. Copy the JAR file into your Jira home directory.

     1. For Server: <Jira_Home>/plugins/installed-plugins

     2. For Data Center: <Jira_Shared>/plugins/installed-plugins
 4. Start Jira.

Detection

Atlassian cannot confirm if your instance has been affected by this
vulnerability, but there are some steps you can follow to investigate your
instances for potential unauthorized access. You can see the detailed steps
outlined on the Frequently Asked Questions (FAQ) page here.

Last modified on Feb 1, 2023

- --------------------------END INCLUDED TEXT--------------------

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