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GitHub_MCVELIST:CVE-2021-39224

HistoryOct 25, 2021 - 9:40 p.m.

CVE-2021-39224 File path disclosure of shared files in OfficeOnline application

2021-10-2521:40:17

CWE-200

GitHub_M

www.cve.org

nextcloud

file path disclosure

officeonline

upgrade

disable

shared files

CVSS3

3.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.4

Confidence

High

EPSS

0.001

Percentile

31.2%

JSON

Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud OfficeOnline application prior to version 1.1.1 returned verbatim exception messages to the user. This could result in a full path disclosure on shared files. (e.g. an attacker could see that the file shared.txt is located within /files/$username/Myfolder/Mysubfolder/shared.txt). It is recommended that the OfficeOnline application is upgraded to 1.1.1. As a workaround, one may disable the OfficeOnline application in the app settings.

CNA Affected

[
  {
    "product": "security-advisories",
    "vendor": "nextcloud",
    "versions": [
      {
        "status": "affected",
        "version": "< 1.1.1"
      }
    ]
  }
]

References

github.com/nextcloud/officeonline/pull/204

github.com/nextcloud/security-advisories/security/advisories/GHSA-56wm-r6jm-3v9h

CVSS3

3.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.4

Confidence

High

EPSS

0.001

Percentile

31.2%

JSON

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