EulerOS 2.0 SP8 : nginx (EulerOS-SA-2021-2308)

critical Nessus Plugin ID 152409
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote EulerOS host is missing a security update.


According to the version of the nginx packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

- A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact.(CVE-2021-23017)

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.


Update the affected nginx package.

See Also

Plugin Details

Severity: Critical

ID: 152409

File Name: EulerOS_SA-2021-2308.nasl

Version: 1.2

Type: local

Published: 8/10/2021

Updated: 8/12/2021

Dependencies: ssh_get_info.nasl

Risk Information


Risk Factor: High

Score: 8


Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

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


Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:nginx, p-cpe:/a:huawei:euleros:nginx-all-modules, p-cpe:/a:huawei:euleros:nginx-filesystem, p-cpe:/a:huawei:euleros:nginx-mod-http-image-filter, p-cpe:/a:huawei:euleros:nginx-mod-http-perl, p-cpe:/a:huawei:euleros:nginx-mod-http-xslt-filter, p-cpe:/a:huawei:euleros:nginx-mod-mail, p-cpe:/a:huawei:euleros:nginx-mod-stream, cpe:/o:huawei:euleros:2.0

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

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/9/2021

Reference Information

CVE: CVE-2021-23017