Vulnerability Details : CVE-2020-15171
In XWiki before versions 11.10.5 or 12.2.1, any 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. The only workaround is to give SCRIPT right only to trusted users.
Exploit prediction scoring system (EPSS) score for CVE-2020-15171
Probability of exploitation activity in the next 30 days: 0.11%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 43 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-15171
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
6.0
|
MEDIUM | AV:N/AC:M/Au:S/C:P/I:P/A:P |
6.8
|
6.4
|
NIST |
|
6.6
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H |
0.7
|
5.9
|
NIST |
|
6.6
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H |
0.7
|
5.9
|
GitHub, Inc. |
CWE ids for CVE-2020-15171
-
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.Assigned by: nvd@nist.gov (Primary)
-
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.Assigned by: security-advisories@github.com (Secondary)
References for CVE-2020-15171
-
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-7qw5-pqhc-xm4g
Users with SCRIPT right can access the application server instance manager and create arbitrary Java objects through $request binding · Advisory · xwiki/xwiki-platform · GitHubThird Party Advisory
Products affected by CVE-2020-15171
- cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:*
- cpe:2.3:a:xwiki:xwiki:*:*:*:*:*:*:*:*