Home/CVE/A missing verification of the TLS host in Nextcloud Mail 1.1.3 allowed a man in the middle attack.
CVE

CVE-2020-8156

A missing verification of the TLS host in Nextcloud Mail 1.1.3 allowed a man in the middle attack.

A missing verification of the TLS host in Nextcloud Mail 1.1.3 allowed a man in the middle attack.

HIGH · CVSS 7 EPSS 0.00543
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-295Improper Certificate Validation
CWE-295Improper Certificate Validation
▤

Affected Products & Versions

2
nextcloud mail< 1.1.4
fedoraproject fedoraall versions
▣

Scoring & Timeline

7
HIGH · CVSS v3.1 · support@hackerone.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD12 May 2020 · 01:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP/
https://nextcloud.com/security/advisory/?id=NC-SA-2020-020Vendor Advisory
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