CVE-2020-8133 — MEDIUM (5.3)

Vulnerability 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 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Nextcloud	Nextcloud Server	19.0.1

Related Weaknesses (CWE)

CWE-657 CWE-347

References

https://hackerone.com/reports/661051%2C
https://nextcloud.com/security/advisory/?id=NC-SA-2020-038Broken Link
https://hackerone.com/reports/661051ExploitThird Party Advisory
https://hackerone.com/reports/661051%2C
https://nextcloud.com/security/advisory/?id=NC-SA-2020-038Broken Link

FAQ

What is CVE-2020-8133?

CVE-2020-8133 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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.

How severe is CVE-2020-8133?

CVE-2020-8133 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-8133?

Check the references section above for vendor advisories and patch information. Affected products include: Nextcloud Nextcloud Server.