RHEL 7 : rh-nginx118-nginx (RHSA-2021:2258)
critical Nessus Plugin ID 150786
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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
Plugin Details
Severity: Critical
ID: 150786
File Name: redhat-RHSA-2021-2258.nasl
Version: 1.5
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 6/15/2021
Updated: 10/7/2021
Dependencies: ssh_get_info.nasl, redhat_repos.nasl
Risk Information
CVSS Score Source: CVE-2021-23017
VPR
Risk Factor: High
Score: 7.4
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.9
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Temporal Vector: E:POC/RL:OF/RC:C
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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