Detections
Analytics
MiracleLinux 9 : unbound-1.16.2-8.el9_5.1 (AXSA:2024-9491:08)
medium Nessus Plugin ID 292593
Synopsis
The remote MiracleLinux host is missing a security update.Description
The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2024-9491:08 advisory.unbound: Unbounded name compression could lead to Denial of Service (CVE-2024-8508) CVE(s):
CVE-2024-8508 NLnet Labs Unbound up to and including version 1.21.0 contains a vulnerability when handling replies with very large RRsets that it needs to perform name compression for. Malicious upstreams responses with very large RRsets can cause Unbound to spend a considerable time applying name compression to downstream replies. This can lead to degraded performance and eventually denial of service in well orchestrated attacks. The vulnerability can be exploited by a malicious actor querying Unbound for the specially crafted contents of a malicious zone with very large RRsets. Before Unbound replies to the query it will try to apply name compression which was an unbounded operation that could lock the CPU until the whole packet was complete. Unbound version 1.21.1 introduces a hard limit on the number of name compression calculations it is willing to do per packet. Packets that need more compression will result in semi- compressed packets or truncated packets, even on TCP for huge messages, to avoid locking the CPU for long.
This change should not affect normal DNS traffic.
Tenable has extracted the preceding description block directly from the MiracleLinux 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 affected packages.See Also
Plugin Details
Severity: Medium
ID: 292593
File Name: miracle_linux_AXSA-2024-9491.nasl
Version: 1.1
Type: local
Published: 1/20/2026
Updated: 1/20/2026
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 1.4
Vendor
Vendor Severity: Moderate
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS Score Source: CVE-2024-8508
CVSS v3
Risk Factor: Medium
Base Score: 5.3
Temporal Score: 4.6
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:miracle:linux:unbound-libs, p-cpe:/a:miracle:linux:unbound, p-cpe:/a:miracle:linux:unbound-devel, p-cpe:/a:miracle:linux:python3-unbound, cpe:/o:miracle:linux:9
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/MiracleLinux/release, Host/MiracleLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 12/25/2024
Vulnerability Publication Date: 10/3/2024
Reference Information
CVE: CVE-2024-8508