This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2021-42717 →
DEBIAN-CVE-2021-42717
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...
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:12
modsecurity
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.6-1"}]}]
Debian:13
modsecurity
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.6-1"}]}]
Debian:14
modsecurity
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.6-1"}]}]
Debian:12
modsecurity-apache
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.5-1"}]}]
Debian:13
modsecurity-apache
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.5-1"}]}]
Debian:14
modsecurity-apache
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.5-1"}]}]
References
- advisory security-tracker.debian.org