PT-2021-15260 · Nextcloud · Nextcloud Mail

Kesselb · Published 2021-06-11 · Updated 2021-06-22 · CVE-2021-22896

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Nextcloud Mail versions prior to 1.9.5

Description The issue is related to improper access control due to a missing permission check. This allows other authenticated users to create mail aliases for other users.

Recommendations For versions prior to 1.9.5, update to version 1.9.5 or later to resolve the issue.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2021-22896

GHSA-JMGP-77JQ-FJP3

Affected Products

Nextcloud Mail

References · 6

• https://github.com/nextcloud/mail/pull/4864 · Patch
• https://osv.dev/vulnerability/CVE-2021-22896 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-22896 · Security Note
• https://github.com/nextcloud/mail/releases/tag/v1.9.5 · Note
• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3 · Note
• https://hackerone.com/reports/1129996 · Note