Medium severity · published Nov 9, 2020
CVE-2020-8133
A wrong generation of the passphrase for the encrypted block in Nextcloud Server 19.0.1 allowed an attacker to overwrite blocks in a file
5.3
CVSS
0.7%
EPSS
No
On KEV
Description
A wrong generation of the passphrase for the encrypted block in Nextcloud Server 19.0.1 allowed an attacker to overwrite blocks in a file.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NS
Nextcloud Server · Nextcloud
19.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-8133
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-8133
hackerone.com
https://hackerone.com/reports/661051%2C
Broken Link
https://nextcloud.com/security/advisory/?id=NC-SA-2020-038
Exploit
https://hackerone.com/reports/661051
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