CVE-2020-15252: Xwiki platform oldcore Remote Code Execution Vulnerability
HIGHCVE-2020-15252 is a HIGH (CVSS 8.5) remote code execution vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting Xwiki platform oldcore libraries in the Maven ecosystem. The issue involves rce in xwiki. Remediation is available by upgrading affected packages to version 11.10.6, 12.5.
CVE-2020-15252 at a Glance
Security Impact
CVSS: 8.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H).
How to Fix CVE-2020-15252
To remediate this vulnerability, upgrade all affected Xwiki platform oldcore dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>org.xwiki.platform</groupId>
<artifactId>xwiki-platform-oldcore</artifactId>
<version>11.10.6</version>
</dependency><dependency>
<groupId>org.xwiki.platform</groupId>
<artifactId>xwiki-platform-oldcore</artifactId>
<version>12.5</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=org.xwiki.platformHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2020-15252, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=org.xwiki.platformAnalyze the terminal output to locate any version of Xwiki platform oldcore in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 11.10.6), your application is affected.
Note: The mvn dependency:tree -Dincludes=org.xwiki.platform command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. In Xwiki platform oldcore, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2020-15252 Affected Xwiki platform oldcore Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
org.xwiki.platform:xwiki-platform-oldcore
|
Maven |
< 11.10.6
|
11.10.6
|
|
org.xwiki.platform:xwiki-platform-oldcore
|
Maven |
≥ 12.0
< 12.5
|
12.5
|
References
Frequently Asked Questions
What is CVE-2020-15252?
Which Xwiki platform oldcore versions are affected?
What version fixes CVE-2020-15252?
Is xwiki-platform-oldcore affected?
What is the CVSS score of CVE-2020-15252?
What CWE is associated with CVE-2020-15252?
How can I check Maven dependencies for CVE-2020-15252?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-5hv6-mh8q-q9v8",
"modified" : "2021-11-19T14:41:16Z",
"published" : "2020-10-16T16:55:49Z",
"aliases" : [ "CVE-2020-15252" ],
"summary" : "RCE in XWiki",
"details" : "### Impact\n\nAny user with SCRIPT right (EDIT right before XWiki 7.4) can gain access to the application server Servlet context which contains tools allowing to instantiate arbitrary Java objects and invoke methods that may lead to arbitrary code execution.\n\n### Patches\n\nIt has been patched in both version XWiki 12.5 and XWiki 11.10.6.\n\n### Workarounds\n\nThe only workaround is to give SCRIPT right only to trusted users.\n\n### References\n\nhttps://jira.xwiki.org/browse/XWIKI-17423\n\nIt's been reported by the GitHub Security Lab under https://jira.xwiki.org/browse/XWIKI-17141.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [Jira XWiki](https://jira.xwiki.org)\n* Email us at [our security mailing list](mailto:security@xwiki.org)",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "org.xwiki.platform:xwiki-platform-oldcore"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "11.10.6"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "org.xwiki.platform:xwiki-platform-oldcore"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "12.0"
}, {
"fixed" : "12.5"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-5hv6-mh8q-q9v8"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-15252"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/xwiki/xwiki-platform"
}, {
"type" : "WEB",
"url" : "https://jira.xwiki.org/browse/XWIKI-17141"
}, {
"type" : "WEB",
"url" : "https://jira.xwiki.org/browse/XWIKI-17423"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-74", "CWE-94" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2020-10-16T16:55:27Z",
"nvd_published_at" : "2020-10-16T17:15:00Z"
}
}