#jira

Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fail to verify that post actions invoking /share-issue-publicly were created by the Jira plugin which allowed a malicious Mattermost user to exfiltrate Jira tickets when victim users interacted with affected posts

Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fails to validate user channel membership when attaching Mattermost posts as comments to Jira issues, which allows an authenticated attacker with access to the Jira plugin to read post content and attachments from channels they do not have access to.

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Jenkins Redpen - Pipeline Reporter for Jira Plugin 1.054.v7b_9517b_6b_202 and earlier does not correctly perform path validation of the workspace directory while uploading artifacts to Jira, allowing attackers with Item/Configure permission to retrieve files present on the Jenkins controller workspace directory.

### Impact Any user who can edit their own user profile or any other document can execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. The reason is that rendering output is included as content of HTML macros with insufficient escaping, and it is thus possible to close the HTML macro and inject script macros that are executed with programming rights. To demonstrate, the content `{{html}}{{/html {{/html}}}}` can be inserted into any field of the user profile that supports wiki syntax like the "About" field. If this leads to the display of raw HTML, the instance is vulnerable. ### Patches This problem has been patched by extending the escaping introduced by [XRENDERING-693](https://jira.xwiki.org/browse/XRENDERING-693) to also cover closing HTML macros that have spaces after the macro name in XWiki 16.10.10, 17.4.3 and 17.6.0RC1. A [similar fix](https://github.com/xwiki/xwik...

### Impact XWiki's REST API doesn't enforce any limits for the number of items that can be requested in a single request at the moment. Depending on the number of pages in the wiki and the memory configuration, this can lead to slowness and unavailability of the wiki. As an example, the `/rest/wikis/xwiki/spaces` resource returns all spaces on the wiki by default, which are basically all pages. ### Patches XWiki 17.7.0RC1, 17.4.4 and 16.10.11 introduce a configurable limit, limiting responses to 1000 items by default. Requesting larger limits leads to an error now. ### Workarounds We're not aware of any workaround, except denying access to the affected REST resources in a proxy in front of XWiki.

### Impact A reflected XSS vulnerability in XWiki allows an attacker to send a victim to a URL with a deletion confirmation message on which the attacker-supplied script is executed when the victim clicks the "No" button. When the victim has admin or programming right, this allows the attacker to execute basically arbitrary actions on the XWiki installation including remote code execution. ### Patches This vulnerability has been patched in XWiki 16.10.10, 17.4.2 and 17.5.0 by using the affected URL parameter only in the intended context. ### Workarounds The [patch](https://github.com/xwiki/xwiki-platform/commit/cb578b1b2910d06e9dd7581077072d1cfbd280f2) can be manually applied to the templates that are present in the WAR. A restart of XWiki is needed for the changes to be applied.

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Vulnerability management is a core component of every cybersecurity strategy. However, businesses often use thousands of software without realising it (when was the last time you checked?), and keeping track of all the vulnerability alerts, notifications, and updates can be a burden on resources and often leads to missed vulnerabilities.  Taking into account that nearly 10% of

### Impact In an instance which is using the XWiki Jetty package (XJetty), a context is exposed to statically access any file located in the webapp/ folder. It allows accessing files which might contains credentials, like http://myhots/webapps/xwiki/WEB-INF/xwiki.cfg, http://myhots/webapps/xwiki/WEB-INF/xwiki.properties or http://myhots/webapps/xwiki/WEB-INF/hibernate.cfg.xml. ### Patches This has been patched in 16.10.11, 17.4.4, 17.7.0. ### Workarounds The workaround is to modify the start_xwiki.sh script following https://github.com/xwiki/xwiki-platform/compare/8b68d8a70b43f25391b3ee48477d7eb71b95cf4b...99a04a0e2143583f5154a43e02174155da7e8e10. ### For more information If you have any questions or comments about this advisory: * Open an issue in [Jira XWiki.org](https://jira.xwiki.org/) * Email us at [Security Mailing List](mailto:security@xwiki.org) ### Attribution Vulnerability reported by Joseph Huber.