Detections
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RHEL 8 : nginx:1.18 (RHSA-2021:2259)
high Nessus Plugin ID 165122
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Synopsis
The remote Red Hat host is missing a security update for nginx:1.18.Description
The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:2259 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 nginx:1.18 package based on the guidance in RHSA-2021:2259.See Also
http://www.nessus.org/u?2106d30d
https://access.redhat.com/security/updates/classification/#important
Plugin Details
Severity: High
ID: 165122
File Name: redhat-RHSA-2021-2259.nasl
Version: 1.9
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 9/15/2022
Updated: 11/7/2024
Supported Sensors: Agentless Assessment, Continuous 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:nginx-mod-http-perl, p-cpe:/a:redhat:enterprise_linux:nginx-all-modules, p-cpe:/a:redhat:enterprise_linux:nginx-mod-http-xslt-filter, p-cpe:/a:redhat:enterprise_linux:nginx-mod-http-image-filter, cpe:/o:redhat:rhel_eus:8.4, p-cpe:/a:redhat:enterprise_linux:nginx-mod-mail, p-cpe:/a:redhat:enterprise_linux:nginx-mod-stream, p-cpe:/a:redhat:enterprise_linux:nginx, p-cpe:/a:redhat:enterprise_linux:nginx-filesystem, cpe:/o:redhat:enterprise_linux:8
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