CVE-2021-43841: XSS by SVG upload in xwiki-platform
First published: Fri Feb 04 2022(Updated: )
### 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)
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| maven/org.xwiki.platform:xwiki-platform-tool-configuration-resources | <12.10.6 | 12.10.6 |
| maven/org.xwiki.platform:xwiki-platform-tool-configuration-resources | >=13.0<=13.2 | 13.3RC1 |
| maven/org.xwiki.platform:xwiki-platform-oldcore | >=13.0<=13.2 | 13.3RC1 |
| maven/org.xwiki.platform:xwiki-platform-oldcore | <12.10.6 | 12.10.6 |
| Xwiki Xwiki | >=1.0<12.10.6 | |
| Xwiki Xwiki | >=13.0<=13.2 |
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Reference Links
- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-9jq9-c2cv-pcrj
- https://nvd.nist.gov/vuln/detail/CVE-2021-43841
- https://github.com/xwiki/xwiki-platform/commit/5853d492b3a274db0d94d560e2a5ea988a271c62
- https://jira.xwiki.org/browse/XWIKI-18368
- https://www.xwiki.org/xwiki/bin/view/Documentation/AdminGuide/Attachments#HAttachmentdisplayordownload
- https://github.com/advisories/GHSA-9jq9-c2cv-pcrj (Advisory)
- collector/github-advisory-latest
- alias/GHSA-9jq9-c2cv-pcrj
- alias/CVE-2021-43841
- collector/github-advisory
- collector/nvd-index
- collector/nvd-cve
- agent/references
- agent/author
- agent/type
- agent/remedy
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/last-modified-date
- agent/weakness
- agent/tags
- agent/title
- agent/first-publish-date
- agent/event
- agent/description
- package-manager/maven
- vendor/xwiki
- canonical/xwiki xwiki
- version/xwiki xwiki/1.0
- version/xwiki xwiki/13.0
- version/xwiki xwiki/13.2