Detections
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CBL Mariner 2.0 Security Update: nbdkit (CVE-2025-47712)

medium Nessus Plugin ID 241877

Synopsis

The remote CBL Mariner host is missing one or more security updates.

Description

The version of nbdkit installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-47712 advisory.

 - A flaw exists in the nbdkit blocksize filter that can be triggered by a specific type of client request.
 When a client requests block status information for a very large data range, exceeding a certain limit, it causes an internal error in the nbdkit, leading to a denial of service. (CVE-2025-47712)

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://nvd.nist.gov/vuln/detail/CVE-2025-47712

Plugin Details

Severity: Medium

ID: 241877

File Name: mariner_CVE-2025-47712.nasl

Version: 1.1

Type: local

Published: 7/11/2025

Updated: 7/11/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.2

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS Score Source: CVE-2025-47712

CVSS v3

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.8

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: x-cpe:/o:microsoft:cbl-mariner, p-cpe:/a:microsoft:cbl-mariner:nbdkit-perl-plugin, p-cpe:/a:microsoft:cbl-mariner:nbdkit-linuxdisk-plugin, p-cpe:/a:microsoft:cbl-mariner:nbdkit-ssh-plugin, p-cpe:/a:microsoft:cbl-mariner:nbdkit-example-plugins, p-cpe:/a:microsoft:cbl-mariner:nbdkit-xz-filter, p-cpe:/a:microsoft:cbl-mariner:nbdkit-iso-plugin, p-cpe:/a:microsoft:cbl-mariner:nbdkit-devel, p-cpe:/a:microsoft:cbl-mariner:nbdkit-gzip-filter, p-cpe:/a:microsoft:cbl-mariner:nbdkit-tar-filter, p-cpe:/a:microsoft:cbl-mariner:nbdkit-cc-plugin, p-cpe:/a:microsoft:cbl-mariner:nbdkit-python-plugin, p-cpe:/a:microsoft:cbl-mariner:nbdkit-libvirt-plugin, p-cpe:/a:microsoft:cbl-mariner:nbdkit-debuginfo, p-cpe:/a:microsoft:cbl-mariner:nbdkit-basic-plugins, p-cpe:/a:microsoft:cbl-mariner:nbdkit-ext2-filter, p-cpe:/a:microsoft:cbl-mariner:nbdkit-tmpdisk-plugin, p-cpe:/a:microsoft:cbl-mariner:nbdkit, p-cpe:/a:microsoft:cbl-mariner:nbdkit-bash-completion, p-cpe:/a:microsoft:cbl-mariner:nbdkit-lua-plugin, p-cpe:/a:microsoft:cbl-mariner:nbdkit-tcl-plugin, p-cpe:/a:microsoft:cbl-mariner:nbdkit-curl-plugin, p-cpe:/a:microsoft:cbl-mariner:nbdkit-server, p-cpe:/a:microsoft:cbl-mariner:nbdkit-stats-filter, p-cpe:/a:microsoft:cbl-mariner:nbdkit-vddk-plugin, p-cpe:/a:microsoft:cbl-mariner:nbdkit-nbd-plugin, p-cpe:/a:microsoft:cbl-mariner:nbdkit-basic-filters

Required KB Items: Host/local_checks_enabled, Host/CBLMariner/release, Host/CBLMariner/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 7/8/2025

Vulnerability Publication Date: 5/10/2025

Reference Information

CVE: CVE-2025-47712