EulerOS 2.0 SP5 : mod_security (EulerOS-SA-2022-1332)

high Nessus Plugin ID 159083

Synopsis

The remote EulerOS host is missing a security update.

Description

According to the versions of the mod_security package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

- 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. (CVE-2021-42717)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected mod_security packages.

See Also

http://www.nessus.org/u?3e8265d2

Plugin Details

Severity: High

ID: 159083

File Name: EulerOS_SA-2022-1332.nasl

Version: 1.2

Type: local

Published: 3/21/2022

Updated: 3/21/2022

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2021-42717

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:mod_security, cpe:/o:huawei:euleros:2.0

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/sp

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Ease: No known exploits are available

Patch Publication Date: 3/21/2022

Vulnerability Publication Date: 12/7/2021

Reference Information

CVE: CVE-2021-42717