CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
46.3%
Anyone who can edit an arbitrary wiki page in an XWiki installation can gain programming right through several cases of missing escaping in the code for displaying sections in the administration interface. This impacts the confidentiality, integrity and availability of the whole XWiki installation. Normally, all users are allowed to edit their own user profile so this should be exploitable by all users of the XWiki instance.
The easiest way to reproduce this is to edit any document with the object editor and add an object of type XWiki.ConfigurableClass
(“Custom configurable sections”). Set “Display in section” and “Display in Category” to “other”, set scope to “Wiki and all spaces” and “Heading” to {{async}}{{groovy}}services.logging.getLogger("attacker").error("Attack from Heading succeeded!"); println("Hello from Groovy!"){{/groovy}}{{/async}}
. Click “Save”. Open <xwiki-host>/xwiki/bin/view/Main/?sheet=XWiki.AdminSheet&viewer=content&editor=globaladmin§ion=other
where <xwiki-host>
is the URL of your XWiki installation. If this displays just “Hello from Groovy!” in a heading and generates an error message with content “Attack from Heading succeeded!” in XWiki’s log, the attack succeeded. Similar attacks are also possible by creating this kind of object on a document with a specially crafted name, see the referenced Jira issues for more reproduction steps.
This has been fixed in XWiki 14.10.15, 15.5.2 and 15.7RC1
It is possible to manually apply the fixes for the vulnerability by editing two pages in the wiki. This patch needs to be applied to the page XWiki.ConfigurableClassMacros
. Further, the following patches need to be applied to the page XWiki.ConfigurableClass
:
Note that also the page XWiki.ConfigurableClass
needs to be changed to xwiki/2.1
syntax for the escaping to work properly but the security vulnerability is fixed also without changing the syntax.
Vendor | Product | Version | CPE |
---|---|---|---|
org.xwiki.platform | xwiki-platform-administration-ui | * | cpe:2.3:a:org.xwiki.platform:xwiki-platform-administration-ui:*:*:*:*:*:*:*:* |
github.com/advisories/GHSA-qj86-p74r-7wp5
github.com/xwiki/xwiki-platform/commit/0f367aaae4e0696f61cf5a67a75edd27d1d16db6
github.com/xwiki/xwiki-platform/commit/1157c1ecea395aac7f64cd8a6f484b1225416dc7
github.com/xwiki/xwiki-platform/commit/749f6aee1bfbcf191c3734ea0aa9eba3aa63240e
github.com/xwiki/xwiki-platform/commit/bd82be936c21b65dee367d558e3050b9b6995713
github.com/xwiki/xwiki-platform/security/advisories/GHSA-qj86-p74r-7wp5
jira.xwiki.org/browse/XWIKI-21121
jira.xwiki.org/browse/XWIKI-21122
jira.xwiki.org/browse/XWIKI-21194
nvd.nist.gov/vuln/detail/CVE-2023-50723
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
46.3%