Detections
Analytics
RHEL 7 : rh-nginx118-nginx (RHSA-2021:2258)
high Nessus Plugin ID 150786
Language:
Synopsis
The remote Red Hat host is missing a security update for rh-nginx118-nginx.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 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-nginx118-nginx package based on the guidance in RHSA-2021:2258.See Also
http://www.nessus.org/u?0ee47b2e
https://access.redhat.com/security/updates/classification/#important
Plugin Details
Severity: High
ID: 150786
File Name: redhat-RHSA-2021-2258.nasl
Version: 1.13
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 6/15/2021
Updated: 11/7/2024
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, 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-nginx118-nginx-mod-mail, p-cpe:/a:redhat:enterprise_linux:rh-nginx118-nginx, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:rh-nginx118-nginx-mod-http-image-filter, p-cpe:/a:redhat:enterprise_linux:rh-nginx118-nginx-mod-stream, p-cpe:/a:redhat:enterprise_linux:rh-nginx118-nginx-mod-http-xslt-filter, p-cpe:/a:redhat:enterprise_linux:rh-nginx118-nginx-mod-http-perl
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