Debian dla-3634 : libnss3 - security update

medium Nessus Plugin ID 183996

Language:

Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3634 advisory.

------------------------------------------------------------------------- Debian LTS Advisory DLA-3634-1 [email protected] https://www.debian.org/lts/security/ Sean Whitton October 28, 2023 https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package : nss Version : 2:3.42.1-1+deb10u7 CVE ID : CVE-2020-25648 CVE-2023-4421

Multiple vulnerabilities were found in nss, a set of libraries designed to support cross-platform development of security-enabled client and server applications.

CVE-2020-25648

A flaw was discovered in how NSS handles CipherChangeSpec messages in TLS 1.3. It could allow an attacker to send multiple CCS messages to servers compiled against NSS, causing denial-of-service.

CVE-2023-4421

A fuzzing project discovered vulnerabilities to Bleichenbacher timing attacks in NSS's facilities for RSA cryptography.

For Debian 10 buster, these problems have been fixed in version 2:3.42.1-1+deb10u7.

We recommend that you upgrade your nss packages.

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

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 these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade the libnss3 packages.

Plugin Details

Severity: Medium

ID: 183996

File Name: debian_DLA-3634.nasl

Version: 1.2

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 10/28/2023

Updated: 1/22/2025

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

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-2020-25648

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

CVSS Score Source: CVE-2023-4421

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:libnss3-dev, p-cpe:/a:debian:debian_linux:libnss3-tools, p-cpe:/a:debian:debian_linux:libnss3

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: 10/28/2023

Vulnerability Publication Date: 10/20/2020

Reference Information

CVE: CVE-2020-25648, CVE-2023-4421

Detections

Analytics