PT-2020-19991 · Nextcloud · Nextcloud Mail

Published 2020-05-12 · Updated 2024-11-20 · CVE-2020-8156

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Nextcloud Mail version 1.1.3

Description A missing verification of the TLS host allowed a man-in-the-middle attack.

Recommendations For Nextcloud Mail version 1.1.3, update to a version that includes the fix for the missing TLS host verification to prevent man-in-the-middle attacks.

Fix

Improper Certificate Validation

Weakness Enumeration

CWE-295

Related Identifiers

CVE-2020-8156

Affected Products

Nextcloud Mail

References · 5

• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-8156 · Security Note
• https://nextcloud.com/security/advisory/?id=NC-SA-2020-020 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-8156 · Vendor Advisory
• https://t.me/cvenotify/102268 · Telegram Post