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RHEL 9 : nghttp2 (RHSA-2023:6746)
critical Nessus Plugin ID 185090
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Synopsis
The remote Red Hat host is missing a security update for nghttp2.Description
The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2023:6746 advisory.libnghttp2 is a library implementing the Hypertext Transfer Protocol version 2 (HTTP/2) protocol in C.
Security Fix(es):
* HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack) (CVE-2023-44487)
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 nghttp2 package based on the guidance in RHSA-2023:6746.See Also
http://www.nessus.org/u?4289b247
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/security/vulnerabilities/RHSB-2023-003
Plugin Details
Severity: Critical
ID: 185090
File Name: redhat-RHSA-2023-6746.nasl
Version: 1.3
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 11/7/2023
Updated: 11/8/2024
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: 6.7
Vendor
Vendor Severity: Important
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2023-44487
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C
CVSS v4
Risk Factor: Critical
Base Score: 9.3
Threat Score: 9.3
Threat Vector: CVSS:4.0/E:A
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:libnghttp2-devel, p-cpe:/a:redhat:enterprise_linux:nghttp2, p-cpe:/a:redhat:enterprise_linux:libnghttp2, cpe:/o:redhat:enterprise_linux:9
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: 11/7/2023
Vulnerability Publication Date: 10/10/2023
CISA Known Exploited Vulnerability Due Dates: 10/31/2023
Reference Information
CVE: CVE-2023-44487