A reflected XSS issue was discovered in DAViCal through 1.1.8. It echoes the action parameter without encoding. If a user visits an attacker-supplied link, the attacker can view all data the attacked user can view, as well as perform all actions in the name of the user. If the user is an administrator, the attacker can for example add a new admin user to gain full access to the application.

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.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A reflected XSS issue was discovered in DAViCal through 1.1.8. It echoes the action parameter without     encoding. If a user visits an attacker-supplied link, the attacker can view all data the attacked user can     view, as well as perform all actions in the name of the user. If the user is an administrator, the     attacker can for example add a new admin user to gain full access to the application. (CVE-2019-18345)

Note that Nessus relies on the presence of the package as reported by the vendor.

Multiple cross-site scripting and cross-site request forgery issues were discovered in the DAViCal CalDAV Server.

Multiple cross-site scripting and cross-site request forgery issues were discovered in the DAViCal CalDAV Server.

For Debian 8 'Jessie', these problems have been fixed in version 1.1.3.1-1+deb8u1.

We recommend that you upgrade your davical packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Type	Severity
381337	Ubuntu 18.04 LTS : DAViCal vulnerabilities (USN-9050-1)	Nessus	Ubuntu Local Security Checks	Local	critical
257171	Linux Distros Unpatched Vulnerability : CVE-2019-18345	Nessus	Misc.	Local	critical
132061	Debian DSA-4582-1 : davical - security update	Nessus	Debian Local Security Checks	Local	critical
132059	Debian DLA-2034-1 : davical security update	Nessus	Debian Local Security Checks	Local	critical

Detections

Analytics

CVE-2019-18345

critical

Tenable Plugins

critical

critical

critical

critical