Cross-site Scripting by SVG upload in xwiki-platform
### Impact When using default XWiki configuration, it's possible for an attacker to upload an SVG containing a script executed when executing the download action on the file. ### Patches This problem has been patched so that the default configuration doesn't allow to display the SVG files in the browser. ### Workarounds This issue can be fixed without the patch by setting properly the configuration to download or display files, see: https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/Attachments#HAttachmentdisplayordownload ### References https://jira.xwiki.org/browse/XWIKI-18368 ### For more information If you have any questions or comments about this advisory: * Open an issue in [Jira](http://jira.xwiki.org) * Email us at [security ML](mailto:security@xwiki.org)
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2021-43841US | medium5.4 | — | ||
XWiki is a generic wiki platform offering runtime services for applications built on top of it. When using default XWiki configuration, it's possible for an attacker to upload an S… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/xwiki/xwiki-platformWEB
- https://github.com/xwiki/xwiki-platform/commit/5853d492b3a274db0d94d560e2a5ea988a271c62WEB
- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-9jq9-c2cv-pcrjWEB
- https://jira.xwiki.org/browse/XWIKI-18368WEB
- https://nvd.nist.gov/vuln/detail/CVE-2021-43841ADVISORY
- https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/Attachments#HAttachmentdisplayordownloadWEB
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