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Debian dla-4274 : libmbedcrypto3 - security update

critical Nessus Plugin ID 251240

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Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4274 advisory.

 - ------------------------------------------------------------------------- Debian LTS Advisory DLA-4274-2 [email protected] https://www.debian.org/lts/security/ Andrej Shadura August 30, 2025 https://wiki.debian.org/LTS
 - -------------------------------------------------------------------------

 Package : mbedtls Version : 2.16.9-0.1+deb11u3 CVE ID : CVE-2025-47917

 The previous update, 2.16.9-0.1+deb11u2, fixed the following security issue:

 CVE-2025-47917

 MbedTLS allows use-after-free in certain situations in the correctly developed applications.

 Unfortunately, the fix was incomplete and introduced a potential regression in other correctly developed applications.

 For Debian 11 bullseye, this problem has been fixed in version 2.16.9-0.1+deb11u3.

 We recommend that you upgrade your mbedtls packages.

 For the detailed security status of mbedtls please refer to its security tracker page at:
 https://security-tracker.debian.org/tracker/mbedtls

 Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian 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

Upgrade the libmbedcrypto3 packages.

See Also

https://security-tracker.debian.org/tracker/source-package/mbedtls

https://packages.debian.org/source/bullseye/mbedtls

https://security-tracker.debian.org/tracker/CVE-2025-47917

Plugin Details

Severity: Critical

ID: 251240

File Name: debian_DLA-4274.nasl

Version: 1.2

Type: local

Agent: unix

Published: 8/18/2025

Updated: 8/30/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2025-47917

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: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:libmbedtls12, p-cpe:/a:debian:debian_linux:libmbedx509-0, p-cpe:/a:debian:debian_linux:libmbedcrypto3, p-cpe:/a:debian:debian_linux:libmbedtls-doc, p-cpe:/a:debian:debian_linux:libmbedtls-dev

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/18/2025

Vulnerability Publication Date: 7/4/2025

Reference Information

CVE: CVE-2025-47917