PT-2020-9741 · Nextcloud+1 · Nextcloud+1

Published 2019-05-07 · Updated 2020-02-06 · CVE-2019-15618

Positive Technologies (AI Summary)

CVSS v3.1

4.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Nextcloud version 15.0.5

Description The issue is related to missing escaping of HTML in the Updater, allowing a reflected XSS attack when the updater is started from a malicious location.

Recommendations For Nextcloud version 15.0.5, update to a version that includes the fix for the missing HTML escaping in the Updater to prevent reflected XSS attacks.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

ALT-PU-2019-1778

CVE-2019-15618

Affected Products

Alt Linux

Nextcloud

References · 5

• https://nextcloud.com/security/advisory/?id=NC-SA-2020-007 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-15618 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-15618 · Security Note
• https://t.me/cvenotify/769 · Telegram Post
• https://hackerone.com/reports/515484 · Note