Semantic MediaWiki 2.5.0 before 7.3.1 Resource Exhaustion via #set_recurring_event
Impact
Semantic MediaWiki from 2.5.0 before 7.3.1 contains an uncontrolled resource consumption vulnerability that allows low-privilege editors to bypass smwgMaxNumRecurringEvents by supplying a large limit parameter. Attackers can save pages using set_recurring_event without an end date to generate thousands or millions of date subobjects, exhausting CPU, memory, and database resources.
Source excerpt · VulnCheckAffected packages
Affected products
Vendor version evidence. Product records are separate from automatic dependency matching.
SemanticMediaWiki · SemanticMediaWiki
Other versions: unaffected
| Version / range | Source status |
|---|---|
| 2.5.0 to before 7.3.1 | affected |
| 7.3.1 | unaffected |
Original source description
Semantic MediaWiki from 2.5.0 before 7.3.1 contains an uncontrolled resource consumption vulnerability that allows low-privilege editors to bypass smwgMaxNumRecurringEvents by supplying a large limit parameter. Attackers can save pages using #set_recurring_event without an end date to generate thousands or millions of date subobjects, exhausting CPU, memory, and database resources.
References
- Security advisory github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-vxrm-2g9f-2vqh
- Patch github.com/SemanticMediaWiki/SemanticMediaWiki/commit/215599f0fc03274fd4cee9ba0f7162f5a38c031b
- Security advisory www.vulncheck.com/advisories/semantic-mediawiki-2.5.0-before-7.3.1-resource-exhaustion-via-set-recurring-event