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Ubuntu 18.04 LTS / 20.04 LTS : Nettle vulnerabilities (USN-4990-1)

medium Nessus Plugin ID 150857

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4990-1 advisory.

 It was discovered that Nettle incorrectly handled RSA decryption. A remote attacker could possibly use this issue to cause Nettle to crash, resulting in a denial of service. (CVE-2021-3580)

 It was discovered that Nettle incorrectly handled certain padding oracles. A remote attacker could possibly use this issue to perform a variant of the Bleichenbacher attack. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-16869)

Tenable has extracted the preceding description block directly from the Ubuntu 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

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-4990-1

Plugin Details

Severity: Medium

ID: 150857

File Name: ubuntu_USN-4990-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 6/17/2021

Updated: 8/28/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Low

Base Score: 3.3

Temporal Score: 2.4

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

CVSS Score Source: CVE-2018-16869

CVSS v3

Risk Factor: Medium

Base Score: 5.7

Temporal Score: 5

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libhogweed4, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:nettle-bin, p-cpe:/a:canonical:ubuntu_linux:libnettle6, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libnettle7, p-cpe:/a:canonical:ubuntu_linux:nettle-dev, p-cpe:/a:canonical:ubuntu_linux:libhogweed5

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/17/2021

Vulnerability Publication Date: 11/30/2018

Reference Information

CVE: CVE-2018-16869, CVE-2021-3580

USN: 4990-1