Detections
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AlmaLinux 8 : nginx:1.20 (ALSA-2022:0323)

high Nessus Plugin ID 158864

Synopsis

The remote AlmaLinux host is missing a security update.

Description

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2022:0323 advisory.

 - 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 Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://errata.almalinux.org/8/ALSA-2022-0323.html

Plugin Details

Severity: High

ID: 158864

File Name: alma_linux_ALSA-2022-0323.nasl

Version: 1.5

Type: local

Published: 3/12/2022

Updated: 3/23/2023

Supported Sensors: Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2021-23017

CVSS v3

Risk Factor: High

Base Score: 7.7

Temporal Score: 6.9

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:alma:linux:nginx-mod-http-image-filter, p-cpe:/a:alma:linux:nginx-mod-stream, p-cpe:/a:alma:linux:nginx-mod-http-perl, p-cpe:/a:alma:linux:nginx-filesystem, cpe:/o:alma:linux:8, p-cpe:/a:alma:linux:nginx, p-cpe:/a:alma:linux:nginx-mod-mail, p-cpe:/a:alma:linux:nginx-all-modules, p-cpe:/a:alma:linux:nginx-mod-http-xslt-filter

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/31/2022

Vulnerability Publication Date: 5/25/2021

Reference Information

CVE: CVE-2021-23017

IAVB: 2021-B-0031