RHEL 7 : rh-nginx118-nginx (RHSA-2021:2258)

critical Nessus Plugin ID 150786

Synopsis

The remote Red Hat host is missing a security update.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:2258 advisory.

- nginx: Off-by-one in ngx_resolver_copy() when labels are followed by a pointer to a root domain name (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://cwe.mitre.org/data/definitions/193.html

https://access.redhat.com/security/cve/CVE-2021-23017

https://access.redhat.com/errata/RHSA-2021:2258

https://bugzilla.redhat.com/1963121

Plugin Details

Severity: Critical

ID: 150786

File Name: redhat-RHSA-2021-2258.nasl

Version: 1.6

Type: local

Agent: unix

Published: 6/15/2021

Updated: 10/19/2021

Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent

Risk Information

VPR

Risk Factor: High

Score: 7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

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

CVSS Score Source: CVE-2021-23017

CVSS v3

Risk Factor: Critical

Base Score: 9.4

Temporal Score: 8.4

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

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:rh-nginx118-nginx, p-cpe:/a:redhat:enterprise_linux:rh-nginx118-nginx-mod-http-image-filter, p-cpe:/a:redhat:enterprise_linux:rh-nginx118-nginx-mod-http-perl, p-cpe:/a:redhat:enterprise_linux:rh-nginx118-nginx-mod-http-xslt-filter, p-cpe:/a:redhat:enterprise_linux:rh-nginx118-nginx-mod-mail, p-cpe:/a:redhat:enterprise_linux:rh-nginx118-nginx-mod-stream

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/7/2021

Vulnerability Publication Date: 5/25/2021

Reference Information

CVE: CVE-2021-23017

RHSA: 2021:2258

IAVB: 2021-B-0031

CWE: 193