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Huawei EulerOS: CVE-2021-42717: mod_security security update

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Huawei EulerOS: CVE-2021-42717: mod_security security update

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
12/07/2021
Created
03/23/2022
Added
03/22/2022
Modified
03/22/2022

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)

  • huawei-euleros-2_0_sp5-upgrade-mod_security

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