Atlassian Crowd未授权文件上传漏洞

# Crowd Security Advisory 2019-05-22 #### Related content #### Still need help? The Atlassian Community is here for you. [Ask the community](https://community.atlassian.com/t5/custom/page/page-id/create-post-step-1?add-tags=Crowd) ## Crowd: pdkinstall development plugin incorrectly enabled (CVE-2019-11580) | Summary | pdkinstall development plugin incorrectly enabled (CVE-2019-11580) | | --------------------- | ------------------------------------------------------------ | | Advisory Release Date | 22 May 2019 10 AM PDT (Pacific Time, -7 hours) | | Products | CrowdCrowd Data Center | | Affected Versions | 2.1.0 <= version < 3.0.53.1.0 <= version < 3.1.63.2.0 <= version < 3.2.83.3.0 <= version < 3.3.53.4.0 <= version < 3.4.4 [Click here to expand...](https://confluence.atlassian.com/crowd/crowd-security-advisory-2019-05-22-970260700.html#) | | Fixed Versions | 3.0.53.1.63.2.83.3.53.4.4 | | CVE ID(s) | CVE-2019-11580 | ### **Summary of Vulnerability** This advisory discloses a **critical severity** security vulnerability which was introduced in version 2.1.0 of Crowd and Crowd Data Center. Versions of Crowd and Crowd Data Center starting with version 2.1.0 before 3.0.5 (the fixed version for 3.0.x), from version 3.1.0 before 3.1.6 (the fixed version for 3.1.x), from version 3.2.0 before 3.2.8 (the fixed version for 3.2.x), from version 3.3.0 before 3.3.5 (the fixed version for 3.3.x), and from version 3.4.0 before 3.4.4 (the fixed version for 3.4.x) are affected by this vulnerability. <svg xmlns="http://www.w3.org/2000/svg" class="admonition-icon" width="18" height="18" viewBox="0 0 18 18"><path d="M0 9c0-5 4-9 9-9s9 4 9 9-4 9-9 9-9-4-9-9zm8-1v5c0 .6.4 1 1 1s1-.4 1-1V8c0-.6-.4-1-1-1s-1 .4-1 1zm1-2c.6 0 1-.4 1-1s-.4-1-1-1-1 .4-1 1 .4 1 1 1z" fill="#0052CC" fill-rule="evenodd"></path></svg> **Customers who have upgraded Crowd or Crowd Data Center to version 3.0.5 or 3.1.6 or 3.2.8 or 3.3.5 or 3.4.4** **are** **not affected****.** <svg xmlns="http://www.w3.org/2000/svg" class="admonition-icon" width="20" height="20" viewBox="0 0 20 20"><g transform="translate(-2 -2)" fill="none" fill-rule="evenodd"><rect fill="#FF5630" transform="rotate(45 11.9 11.9)" x="4.9" y="4.9" width="14" height="14" rx="1.7"></rect><path d="M12 17c-.6 0-1-.4-1-1s.4-1 1-1 1 .4 1 1-.4 1-1 1zm1-4c0 .6-.4 1-1 1s-1-.4-1-1V8c0-.6.4-1 1-1s1 .4 1 1v5z" fill="#FFF"></path></g></svg> Customers who are currently running: - Crowd or Crowd Data Center **from version 2.1.0 before 3.0.5** (the fixed version for 3.0.x) - Crowd or Crowd Data Center **from version 3.1.0 before 3.1.6** (the fixed version for 3.1.x) - Crowd or Crowd Data Center **from version** **3.2.0 before 3.2.8** (the fixed version for 3.2.x) - Crowd or Crowd Data Center **from version** **3.3.0 before 3.3.5** (the fixed version for 3.3.x) - Crowd or Crowd Data Center **from version** **3.4.0 before 3.4.4** (the fixed version for 3.4.x) Please **upgrade your** **Crowd** **or Crowd Data Center** installations **immediately** to fix this vulnerability. ### **pdkinstall development plugin incorrectly enabled (CVE-2019-11580)** #### **Severity** Atlassian rates the severity level of this vulnerability as **critical**, according to the scale published in [our Atlassian severity levels](https://www.atlassian.com/security/security-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. #### **Description** Crowd and Crowd Data Center had the pdkinstall development plugin incorrectly enabled in release builds. Attackers who can send unauthenticated or authenticated requests to a Crowd or Crowd Data Center instance can exploit this vulnerability to install arbitrary plugins, which permits remote code execution on systems running a vulnerable version of Crowd or Crowd Data Center. All versions of Crowd from version **2.1.0 before 3.0.5** (the fixed version for 3.0.x), from version **3.1.0 before 3.1.6** (the fixed version for 3.1.x), from version **3.2.0 before 3.2.8** (the fixed version for 3.2.x), from version **3.3.0 before 3.3.5** (the fixed version for 3.3.x), and from version **3.4.0 before 3.4.4**(the fixed version for 3.4.x) are affected by this vulnerability. This issue can be tracked here: [CWD-5388](https://jira.atlassian.com/browse/CWD-5388) - Crowd - pdkinstall development plugin incorrectly enabled - CVE-2019-11580CLOSED ### **Fix** We have taken the following steps to address this issue: - Released Crowd and Crowd Data Center version 3.4.4 that contains a fix for this issue and can downloaded from <https://www.atlassian.com/software/crowd/download> - Released Crowd and Crowd Data Center versions 3.0.5, 3.1.6, 3.2.8, and 3.3.5 that contain a fix for this issue and can downloaded from <https://www.atlassian.com/software/crowd/download-archive> ### **What You Need to Do** Atlassian recommends customers running a version of Crowd below version 3.3.0 upgrade to version 3.2.8 to avoid **CWD-5352 RESOLVED** , for customers running a version above or equal to 3.3.0 Atlassian recommends to upgrade to the latest version. For a full description of the latest version of Crowd, see the [release notes](https://confluence.atlassian.com/crowd/crowd-release-notes-199094.html). You can download the latest version of Crowd from the [download centre](https://www.atlassian.com/software/crowd/download). | If you are running version | Then upgrade to bugfix version | | ------------------------------------------------------------ | ------------------------------ | | 2.1.0, 2.1.1, 2.1.2, 2.2.0, 2.2.1, 2.2.2, 2.2.3, 2.2.4, 2.2.5, 2.2.6, 2.2.7, 2.2.8, 2.2.9, 2.3.0, 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.3.6, 2.3.7, 2.3.8, 2.3.9, 2.3.10, 2.4.0, 2.4.1, 2.4.2, 2.4.3, 2.4.4, 2.4.5, 2.4.6, 2.4.7, 2.4.8, 2.4.9, 2.4.10, 2.4.11, 2.5.0, 2.5.1, 2.5.2, 2.5.3, 2.5.4, 2.5.5, 2.5.6, 2.5.7, 2.6.0, 2.6.1, 2.6.2, 2.6.3, 2.6.4, 2.6.5, 2.6.6, 2.6.7, 2.7.0, 2.7.1, 2.7.2, 2.8.0, 2.8.1, 2.8.2, 2.8.3, 2.8.4, 2.8.6, 2.8.7, 2.8.8, 2.9.1, 2.9.2, 2.9.3, 2.9.4, 2.9.5, 2.9.6, 2.9.7, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.11.0, 2.11.1, 2.11.2, 2.12.0, 2.12.1, 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4 | 3.0.5 | | 3.1.0, 3.1.1, 3.1.2, 3.1.3, 3.1.4, 3.1.5 | 3.1.6 | | 3.2.0, 3.2.1, 3.2.2, 3.2.3, 3.2.4, 3.2.5, 3.2.6, 3.2.7 | 3.2.8 | | 3.3.0, 3.3.1, 3.3.2, 3.3.3, 3.3.4 | 3.3.5 | | 3.4.0, 3.4.1, 3.4.2, 3.4.3 | 3.4.4 | #### **Mitigation** This issue can be mitigated by doing the following: 1. Stop Crowd 2. Find and delete any pdkinstall-plugin jar files from the Crowd **installation directory and the data directory** 3. Remove the pdkinstall-plugin jar file from <Crowd installation directory>/crowd-webapp/WEB-INF/classes/atlassian-bundled-plugins.zip 1. Unzip the **<Crowd installation directory>/crowd-webapp/WEB-INF/classes/atlassian-bundled-plugins.zip** file 2. Delete the **pdkinstall-plugin-0.4.jar** file inside the extracted folder 3. Zip the contents of the folder back into **<Crowd installation directory>/crowd-webapp/WEB-INF/classes/atlassian-bundled-plugins.zip** 4. Start Crowd 1. If you have any issues starting Crowd after these changes - [clear the plugin cache](https://confluence.atlassian.com/crowdkb/unable-to-start-crowd-due-to-corrupted-plugin-caches-320602585.html). 5. Check that there are no pdkinstall-plugin jar files in the **installation directory or the data directory** The following bash script can be used to apply the above mitigation on Linux systems: ```none #!/bin/bash set -u INSTALLATION_DIRECTORY= # set this to where crowd is installed DATA_DIRECTORY= # set this to the crowd data directory if [ -z "$INSTALLATION_DIRECTORY" ] then echo "Please set INSTALLATION_DIRECTORY" exit 1 fi if [ -z "$DATA_DIRECTORY" ] then echo "Please set DATA_DIRECTORY" exit 1 fi if test -f $DATA_DIRECTORY; then echo "Please check that DATA_DIRECTORY is correct." exit 1 fi if test -f $INSTALLATION_DIRECTORY/stop_crowd.sh; then echo "Stopping Crowd" $INSTALLATION_DIRECTORY/stop_crowd.sh > /dev/null find $INSTALLATION_DIRECTORY -iname 'atlassian-bundled-plugins.zip' -exec zip -d {} 'pdkinstall-plugin-*.jar' \; # You should see something like deleting: pdkinstall-plugin-0.4.jar after the above find command has run find $DATA_DIRECTORY -iname 'pdkinstall-plugin*' -exec rm {} \; echo "Starting Crowd" if test -f $INSTALLATION_DIRECTORY/start_crowd.sh; then $INSTALLATION_DIRECTORY/start_crowd.sh sleep 60 find $DATA_DIRECTORY -iname 'pdkinstall-plugin*' -exec "Failed to apply the mitigation - {} still exists" \; else echo "Failed to start crowd" fi else echo "Unable to stop crowd, please ensure that you have specified the correct installation directory." fi ``` ### **Support** If you did not receive an email for this advisory and you wish to receive such emails in the future go to <https://my.atlassian.com/email> and subscribe to Alerts emails. If you have questions or concerns regarding this advisory, please raise a support request at <https://support.atlassian.com/>. ### **References** | [Security Bug fix Policy](https://www.atlassian.com/security/secpol) | As per our new policy critical security bug fixes will be back ported in accordance with <https://www.atlassian.com/trust/security/bug-fix-policy>. We will release new maintenance releases for the versions covered by the policy instead of binary patches.**Binary patches are no longer released.** | | ------------------------------------------------------------ | ------------------------------------------------------------ | | [Severity Levels for security issues](https://www.atlassian.com/security/security-severity-levels) | Atlassian security advisories include a severity level and a CVE identifier. This severity level is based on our self-calculated CVSS score for each specific vulnerability. CVSS is an industry standard vulnerability metric. You can also learn more about CVSS at [FIRST.org](https://www.first.org/cvss/user-guide). | | [End of Life Policy](https://confluence.atlassian.com/support/atlassian-support-end-of-life-policy-201851003.html) | Our end of life policy varies for different products. Please refer to our EOL Policy for details. |