RHEL 7 : rh-nginx116-nginx (RHSA-2021:2278)

high Nessus Plugin ID 150785

Synopsis

The remote Red Hat host is missing a security update for rh-nginx116-nginx.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:2278 advisory.

nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage.

Security Fix(es):

* nginx: Off-by-one in ngx_resolver_copy() when labels are followed by a pointer to a root domain name (CVE-2021-23017)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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 RHEL rh-nginx116-nginx package based on the guidance in RHSA-2021:2278.

See Also

http://www.nessus.org/u?01a618e1

https://access.redhat.com/security/updates/classification/#important

https://access.redhat.com/errata/RHSA-2021:2278

https://bugzilla.redhat.com/show_bug.cgi?id=1963121

Plugin Details

Severity: High

ID: 150785

File Name: redhat-RHSA-2021-2278.nasl

Version: 1.14

Type: local

Agent: unix

Published: 6/15/2021

Updated: 11/7/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

Vendor

Vendor Severity: Important

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:redhat:enterprise_linux:rh-nginx116-nginx, p-cpe:/a:redhat:enterprise_linux:rh-nginx116-nginx-mod-stream, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:rh-nginx116-nginx-mod-mail, p-cpe:/a:redhat:enterprise_linux:rh-nginx116-nginx-mod-http-perl, p-cpe:/a:redhat:enterprise_linux:rh-nginx116-nginx-mod-http-image-filter, p-cpe:/a:redhat:enterprise_linux:rh-nginx116-nginx-mod-http-xslt-filter

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

CWE: 193

IAVB: 2021-B-0031

RHSA: 2021:2278