CVE-2021-32733
CVSS V2 Medium 4.3
CVSS V3 Medium 6.1
Description
Nextcloud Text is a collaborative document editing application that uses Markdown. A cross-site scripting vulnerability is present in versions prior to 19.0.13, 20.0.11, and 21.0.3. The Nextcloud Text application shipped with Nextcloud server used a `text/html` Content-Type when serving files to users. Due the strict Content-Security-Policy shipped with Nextcloud, this issue is not exploitable on modern browsers supporting Content-Security-Policy. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. As a workaround, use a browser that has support for Content-Security-Policy.
Overview
- CVE ID
- CVE-2021-32733
- Assigner
- security-advisories@github.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-07-12T21:15:07
- Last Modified Date
- 2021-07-14T15:27:31
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* | 1 | OR | 19.0.13 | |
| cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* | 1 | OR | 20.0.0 | 20.0.11 |
| cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* | 1 | OR | 21.0.0 | 21.0.3 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:N/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 4.3
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- REQUIRED
- Scope
- CHANGED
- Confidentiality Impact
- LOW
- Availability Impact
- NONE
- Base Score
- 6.1
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 2.7
References
| Reference URL | Reference Tags |
|---|---|
| https://hackerone.com/reports/1241460 | Permissions Required |
| https://github.com/nextcloud/text/pull/1689 | Patch Third Party Advisory |
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-x4w3-jhcr-57pq | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-32733 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32733 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:07:20 | Added to TrackCVE | |||
| 2022-12-05 05:50:32 | 2021-07-12T21:15Z | 2021-07-12T21:15:07 | CVE Published Date | updated |
| 2022-12-05 05:50:32 | 2021-07-14T15:27:31 | CVE Modified Date | updated | |
| 2022-12-05 05:50:32 | Analyzed | Vulnerability Status | updated |