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Debian dla-4430 : libnetsnmptrapd40 - security update

critical Nessus Plugin ID 281597

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-4430 advisory.

 ------------------------------------------------------------------------- Debian LTS Advisory DLA-4430-1 [email protected] https://www.debian.org/lts/security/ Andreas Henriksson January 01, 2026 https://wiki.debian.org/LTS
 -------------------------------------------------------------------------

 Package : net-snmp Version : 5.9+dfsg-4+deb11u3 CVE ID : CVE-2025-68615 Debian Bug : 1069087 1123861

 net-snmp is a SNMP application library, tools and daemon.

 A specially crafted packet to an net-snmp snmptrapd daemon can cause a buffer overflow and the daemon to crash.

 (SNMP ports should never be open to public networks. There is no mitigation available other than ensuring ports to snmptrapd are appropriately firewalled or by upgrading.)

 Additionally a problem with parsing /proc/net/snmp on Linux >= 6.7 (which contains an additional OutTransmits field) was fixed.

 For Debian 11 bullseye, this problem has been fixed in version 5.9+dfsg-4+deb11u3.

 We recommend that you upgrade your net-snmp packages.

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

 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 Attachment:
 signature.asc Description: PGP signature

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 libnetsnmptrapd40 packages.

See Also

https://security-tracker.debian.org/tracker/source-package/net-snmp

https://security-tracker.debian.org/tracker/CVE-2025-68615

https://packages.debian.org/source/bullseye/net-snmp

Plugin Details

Severity: Critical

ID: 281597

File Name: debian_DLA-4430.nasl

Version: 1.1

Type: local

Agent: unix

Published: 1/1/2026

Updated: 1/1/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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-2025-68615

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: p-cpe:/a:debian:debian_linux:libnetsnmptrapd40, cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:libsnmp-perl, p-cpe:/a:debian:debian_linux:snmptrapd, p-cpe:/a:debian:debian_linux:libsnmp-base, p-cpe:/a:debian:debian_linux:libsnmp40, p-cpe:/a:debian:debian_linux:tkmib, p-cpe:/a:debian:debian_linux:snmpd, p-cpe:/a:debian:debian_linux:snmp, p-cpe:/a:debian:debian_linux:libsnmp-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: 1/1/2026

Vulnerability Publication Date: 12/22/2025

Reference Information

CVE: CVE-2025-68615