CVE-2023-39963: Missing password confirmation when creating app passwords
First published: Thu Aug 10 2023(Updated: )
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 20.0.0 and prior to versions 20.0.14.15, 21.0.9.13, 22.2.10.14, 23.0.12.8, 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1, a missing password confirmation allowed an attacker, after successfully stealing a session from a logged in user, to create app passwords for the victim. Nextcloud server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 20.0.14.15, 21.0.9.13, 22.2.10.14, 23.0.12.9, 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Nextcloud Nextcloud Server | >=20.0.0<20.0.14.15 | |
| Nextcloud Nextcloud Server | >=21.0.0<21.0.9.13 | |
| Nextcloud Nextcloud Server | >=22.0.0<22.2.10.14 | |
| Nextcloud Nextcloud Server | >=23.0.0<23.0.12.9 | |
| Nextcloud Nextcloud Server | >=24.0.0<24.0.12.5 | |
| Nextcloud Nextcloud Server | >=25.0.0<25.0.9 | |
| Nextcloud Nextcloud Server | >=25.0.0<25.0.9 | |
| Nextcloud Nextcloud Server | >=26.0.0<26.0.4 | |
| Nextcloud Nextcloud Server | >=26.0.0<26.0.4 | |
| Nextcloud Nextcloud Server | =27.0.0 | |
| Nextcloud Nextcloud Server | =27.0.0 |
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Reference Links
Frequently Asked Questions
What is CVE-2023-39963?
CVE-2023-39963 is a vulnerability in Nextcloud Server that allows an attacker to bypass password confirmation and gain unauthorized access.
What is the severity of CVE-2023-39963?
The severity of CVE-2023-39963 is high with a CVSS score of 7.8.
Which versions of Nextcloud Server are affected by CVE-2023-39963?
Nextcloud Server versions 20.0.0 to 20.0.14.15, 21.0.0 to 21.0.9.13, 22.0.0 to 22.2.10.14, 23.0.0 to 23.0.12.9, 24.0.0 to 24.0.12.5, 25.0.0 to 25.0.9, 26.0.0 to 26.0.4, and 27.0.0 are affected.
How can an attacker exploit CVE-2023-39963?
An attacker can exploit CVE-2023-39963 by stealing a user's session cookie, bypassing password confirmation, and gaining unauthorized access to the Nextcloud Server.
Are there any references for CVE-2023-39963?
Yes, you can find references for CVE-2023-39963 at: [1] [2] [3]
- collector/nvd-api
- collector/nvd-index
- agent/author
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/remedy
- agent/last-modified-date
- agent/title
- agent/severity
- agent/references
- agent/description
- agent/tags
- agent/first-publish-date
- agent/event
- vendor/nextcloud
- canonical/nextcloud nextcloud server
- version/nextcloud nextcloud server/20.0.0
- version/nextcloud nextcloud server/21.0.0
- version/nextcloud nextcloud server/22.0.0
- version/nextcloud nextcloud server/23.0.0
- version/nextcloud nextcloud server/24.0.0
- version/nextcloud nextcloud server/25.0.0
- version/nextcloud nextcloud server/26.0.0
- version/nextcloud nextcloud server/27.0.0