ModSecurity 3.x through 3.0.5 mishandles excessively nested JSON objects. Crafted JSON objects with nesting tens-of-thousands deep could result in the web server being unable to service legitimate requests. Even a moderately large (e.g., 300KB) HTTP request can occupy one of the limited NGINX worker processes for minutes and consume almost all of the available CPU on the machine. Modsecurity 2 is similarly vulnerable: the affected versions include 2.8.0 through 2.9.4.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2021-12-07T21:08:28
Updated: 2024-08-04T03:38:49.325Z
Reserved: 2021-10-19T00:00:00
Link: CVE-2021-42717
Vulnrichment
No data.
NVD
Status : Modified
Published: 2021-12-07T22:15:06.950
Modified: 2024-11-21T06:28:01.980
Link: CVE-2021-42717
Redhat
No data.