Debian DLA-2760-1 : nettle - LTS security update

high Nessus Plugin ID 153482

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Synopsis

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

Description

The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2760 advisory.

Multiple vulnerabilities were discovered in nettle, a low level cryptographic library, which could result in denial of service (remote crash in RSA decryption via specially crafted ciphertext, crash on ECDSA signature verification) or incorrect verification of ECDSA signatures. For Debian 9 stretch, these problems have been fixed in version 3.3-1+deb9u1. We recommend that you upgrade your nettle packages. For the detailed security status of nettle please refer to its security tracker page at: https://security- tracker.debian.org/tracker/nettle 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 these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade the nettle packages.

For Debian 9 stretch, these problems have been fixed in version 3.3-1+deb9u1.

Plugin Details

Severity: High

ID: 153482

File Name: debian_DLA-2760.nasl

Version: 1.3

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 9/19/2021

Updated: 1/24/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2021-20305

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:nettle-bin, p-cpe:/a:debian:debian_linux:libhogweed4, cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:nettle-dev, p-cpe:/a:debian:debian_linux:libnettle6, p-cpe:/a:debian:debian_linux:nettle-dbg

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/18/2021

Vulnerability Publication Date: 4/5/2021

Reference Information

CVE: CVE-2021-20305, CVE-2021-3580

Detections

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