PT-2021-12726 · Nextcloud · Nextcloud Deck

Published 2021-02-23 · Updated 2021-03-02 · CVE-2020-8297

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Nextcloud Deck versions prior to 1.0.2

Description: The issue is related to an insecure direct object reference (IDOR) vulnerability. This vulnerability allows users with a duplicate user identifier to access deck data of a previously deleted user.

Recommendations: For versions prior to 1.0.2, update to version 1.0.2 or later to resolve the issue. As a temporary workaround, consider restricting access to deck data for users with duplicate identifiers until the update is applied.

Exploit

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2020-8297

Affected Products

Nextcloud Deck

References · 8

• 🔥 https://hackerone.com/reports/882258 · Exploit
• https://github.com/nextcloud/deck/pull/1976 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2020-8297 · Security Note
• https://osv.dev/vulnerability/CVE-2020-8297 · Vendor Advisory
• https://nextcloud.com/security/advisory/?id=NC-SA-2021-007 · Note
• https://t.me/cvenotify/10382 · Telegram Post
• https://t.me/cvenotify/10722 · Telegram Post
• https://t.me/cibsecurity/24033 · Telegram Post