Passphrase Generation Flaw in Nextcloud Server Affects Data Integrity
CVE-2020-8133

5.3MEDIUM

Key Information:

Vendor

Nextcloud
Status
Nextcloud Server
Vendor
CVE Published:
9 November 2020

What is CVE-2020-8133?

A vulnerability in Nextcloud Server 19.0.1 stems from improper generation of the encryption passphrase for file blocks. This flaw enables attackers to overwrite blocks in a file, potentially compromising data integrity and leading to unauthorized alterations. Security measures should be reviewed to mitigate risks associated with this vulnerability.

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Affected Version(s)

Nextcloud Server 19.0.2

References

https://hackerone.com/reports/661051%2C
x_refsource_MISC
https://nextcloud.com/security/advisory/?id=NC-SA-2020-038
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CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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