vulnerability
Ubuntu: USN-6370-1 (CVE-2021-42717): ModSecurity vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | Dec 7, 2021 | Sep 18, 2023 | Jan 23, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
Dec 7, 2021
Added
Sep 18, 2023
Modified
Jan 23, 2025
Description
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.
Solution(s)
ubuntu-pro-upgrade-libapache2-mod-security2ubuntu-pro-upgrade-libapache2-modsecurity
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