CVE-2023-25818 — Improper Restriction of Excessive Authentication Attempts in Server

CWE-307 — Improper Restriction of Excessive Authentication Attempts2 documents2 sources

Severity

7.1HIGHNVD

CNA5.3

EPSS

0.1%

top 64.85%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

Nextcloud Server Nextcloud Security-advisories

Timeline

PublishedMar 27

Description

Nextcloud server is an open source, personal cloud implementation. In affected versions a malicious user could try to reset the password of another user and then brute force the 62^21 combinations for the password reset token. As of commit `704eb3aa` password reset attempts are now throttled. Note that 62^21 combinations would significant compute resources to brute force. None the less it is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. There are no known workarounds fo…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:NExploitability: 2.8 | Impact: 4.2

Affected Packages2 packages

▶NVDnextcloud/nextcloud_server21.0.0 — 21.0.9.10+4

▶CVEListV5nextcloud/security-advisories>= 24.0.0, < 24.0.10, >= 25.0.0, < 25.0.4+1

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

CVEList

Missing brute force protection on password reset token in Nextcloud Server↗2023-03-27

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