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Ubuntu 16.04 LTS : Radicale vulnerability (USN-9084-1)

high Nessus Plugin ID 381357

Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-9084-1 advisory.

 It was discovered that Radicale did not delay failed authentication attempts when using htpasswd authentication. A remote attacker could possibly use this issue to obtain user passwords through timing or brute-force attacks.

Tenable has extracted the preceding description block directly from the Ubuntu 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

Update the affected python-radicale, python3-radicale and / or radicale packages.

See Also

https://ubuntu.com/security/notices/USN-9084-1

Plugin Details

Severity: High

ID: 381357

File Name: ubuntu_USN-9084-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 11/14/2026

Updated: 11/14/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.51

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

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

CVSS Score Source: CVE-2017-8342

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:python-radicale, p-cpe:/a:canonical:ubuntu_linux:python3-radicale, p-cpe:/a:canonical:ubuntu_linux:radicale

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/12/2026

Vulnerability Publication Date: 4/30/2017

Reference Information

CVE: CVE-2017-8342

USN: 9084-1