CVE-2022-39346 Missing length validation of user displayname in nextcloud server

2022-11-2500:00:00

CWE-400

CWE-20

GitHub_M

www.cve.org

cve-2022-39346

nextcloud server

user displayname

length validation

denial of service

CVSS3

3.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

AI Score

6.6

Confidence

High

EPSS

0.004

Percentile

74.4%

JSON

Nextcloud server is an open source personal cloud server. Affected versions of nextcloud server did not properly limit user display names which could allow a malicious users to overload the backing database and cause a denial of service. It is recommended that the Nextcloud Server is upgraded to 22.2.10, 23.0.7 or 24.0.3. There are no known workarounds for this issue.

CNA Affected

[
  {
    "vendor": "nextcloud",
    "product": "security-advisories",
    "versions": [
      {
        "version": "< 22.2.10",
        "status": "affected"
      },
      {
        "version": ">= 23.0.0, < 23.0.7",
        "status": "affected"
      },
      {
        "version": ">= 24.0.0, < 24.0.3",
        "status": "affected"
      }
    ]
  }
]