High severity · published May 12, 2020
CVE-2020-8156
A missing verification of the TLS host in Nextcloud Mail 1.1.3 allowed a man in the middle attack
7.0
CVSS
1%
EPSS
No
On KEV
Description
A missing verification of the TLS host in Nextcloud Mail 1.1.3 allowed a man in the middle attack.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
32 · source: NVD
MA
Mail · Nextcloud
before 1.1.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-8156
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-8156
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP/
Vendor Advisory
https://nextcloud.com/security/advisory/?id=NC-SA-2020-020
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