ghsa-8xhr-x3v8-rghj
Vulnerability from github
Impact
XWiki supports scheduled jobs that contain Groovy scripts. Currently, the job checks the content author of the job for programming right. However, modifying or adding a job script to a document doesn't modify the content author. Together with a CSRF vulnerability in the job scheduler, this can be exploited for remote code execution by an attacker with edit right on the wiki.
For successful exploitation, the needs to have edit right on a document whose content has last been changed by a user with programming right. This could be the user profile for users created by admins. In this document, the attacker can create an object of class XWiki.SchedulerJobClass using the object editor. By setting job class to com.xpn.xwiki.plugin.scheduler.GroovyJob, cron expression to 0 0/5 * * * ? and job script to services.logging.getLogger("foo").error("Job content executed"), the attacker can create a job. Now this job just needs to be triggered or scheduled. This can be achieved by embedding an image with the following XWiki syntax in any document that is visited by an admin: [[image:path:/xwiki/bin/view/Scheduler/?do=trigger&which=Attacker.Document]] where Attacker.Document is the document that has been prepared by the attacker. If the attack is successful, an error log entry with "Job content executed" will be produced.
Patches
This vulnerability has been patched in XWiki 14.10.9 and 15.4RC1.
Workarounds
There is no workaround.
References
- https://jira.xwiki.org/browse/XWIKI-20852
- https://github.com/xwiki/xwiki-platform/commit/fcdcfed3fe2e8a3cad66ae0610795a2d58ab9662
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.xwiki.platform:xwiki-platform-scheduler-api"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "14.10.9"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "com.xpn.xwiki.platform.plugins:xwiki-plugin-scheduler"
},
"ranges": [
{
"events": [
{
"introduced": "1.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Maven",
"name": "org.xwiki.platform:xwiki-platform-scheduler-api"
},
"ranges": [
{
"events": [
{
"introduced": "15.0-rc-1"
},
{
"fixed": "15.4-rc-1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2023-40573"
],
"database_specific": {
"cwe_ids": [
"CWE-284"
],
"github_reviewed": true,
"github_reviewed_at": "2023-08-23T20:41:30Z",
"nvd_published_at": "2023-08-24T02:15:09Z",
"severity": "CRITICAL"
},
"details": "### Impact\n\nXWiki supports scheduled jobs that contain Groovy scripts. Currently, the job checks the content author of the job for programming right. However, modifying or adding a job script to a document doesn\u0027t modify the content author. Together with a CSRF vulnerability in the job scheduler, this can be exploited for remote code execution by an attacker with edit right on the wiki.\n\nFor successful exploitation, the needs to have edit right on a document whose content has last been changed by a user with programming right. This could be the user profile for users created by admins. In this document, the attacker can create an object of class `XWiki.SchedulerJobClass` using the object editor. By setting job class to `com.xpn.xwiki.plugin.scheduler.GroovyJob`, cron expression to `0 0/5 * * * ?` and job script to `services.logging.getLogger(\"foo\").error(\"Job content executed\")`, the attacker can create a job. Now this job just needs to be triggered or scheduled. This can be achieved by embedding an image with the following XWiki syntax in any document that is visited by an admin: `[[image:path:/xwiki/bin/view/Scheduler/?do=trigger\u0026which=Attacker.Document]]` where `Attacker.Document` is the document that has been prepared by the attacker. If the attack is successful, an error log entry with \"Job content executed\" will be produced.\n\n### Patches\nThis vulnerability has been patched in XWiki 14.10.9 and 15.4RC1.\n\n### Workarounds\nThere is no workaround.\n\n### References\n* https://jira.xwiki.org/browse/XWIKI-20852\n* https://github.com/xwiki/xwiki-platform/commit/fcdcfed3fe2e8a3cad66ae0610795a2d58ab9662",
"id": "GHSA-8xhr-x3v8-rghj",
"modified": "2023-08-23T20:41:30Z",
"published": "2023-08-23T20:41:30Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-8xhr-x3v8-rghj"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-40573"
},
{
"type": "WEB",
"url": "https://github.com/xwiki/xwiki-platform/commit/fcdcfed3fe2e8a3cad66ae0610795a2d58ab9662"
},
{
"type": "PACKAGE",
"url": "https://github.com/xwiki/xwiki-platform"
},
{
"type": "WEB",
"url": "https://jira.xwiki.org/browse/XWIKI-20852"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "XWiki Platform\u0027s Groovy jobs check the wrong author, allowing remote code execution"
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.