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Ubuntu 18.04 LTS : DAViCal vulnerabilities (USN-9050-1)

critical Nessus Plugin ID 381337

Synopsis

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

Description

The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-9050-1 advisory.

 It was discovered that DAViCal did not properly encode certain request parameters, leading to a reflected cross-site scripting vulnerability. A remote attacker could possibly use this issue to perform actions as another user, including adding administrator accounts. (CVE-2019-18345)

 It was discovered that DAViCal did not protect against cross-site request forgery. A remote attacker could possibly use this issue to perform actions as an authenticated user, including adding administrator accounts. (CVE-2019-18346)

 It was discovered that DAViCal did not properly sanitize certain user account fields, leading to a stored cross-site scripting vulnerability. An authenticated user could possibly use this issue to execute arbitrary script in the browser of another user, including an administrator. (CVE-2019-18347)

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 davical package.

See Also

https://ubuntu.com/security/notices/USN-9050-1

Plugin Details

Severity: Critical

ID: 381337

File Name: ubuntu_USN-9050-1.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: 57.15

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2019-18346

CVSS v3

Risk Factor: Critical

Base Score: 9.3

Temporal Score: 8.4

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

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

CVSS Score Source: CVE-2019-18345

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:davical

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: 11/11/2026

Vulnerability Publication Date: 12/4/2019

Reference Information

CVE: CVE-2019-18345, CVE-2019-18346, CVE-2019-18347

USN: 9050-1