CVE-2023-28998
Nextcloud Desktop Client End-to-End Encryption Bypass Vulnerability
Description
The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server. Starting with version 3.0.0 and prior to version 3.6.5, a malicious server administrator can gain full access to an end-to-end encrypted folder. They can decrypt files, recover the folder structure, and add new files. Users should upgrade the Nextcloud Desktop client to 3.6.5 to receive a patch. No known workarounds are available.
INFO
Published Date :
April 4, 2023, 1:15 p.m.
Last Modified :
Nov. 7, 2023, 4:10 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.8
Exploitability Score :
0.4
Affected Products
The following products are affected by CVE-2023-28998
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-28998.
| URL | Resource |
|---|---|
| https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf | Exploit Technical Description Third Party Advisory |
| https://github.com/nextcloud/desktop/pull/5323 | Patch Vendor Advisory |
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jh3g-wpwv-cqgr | Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-28998 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-28998 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Changed Description The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server. Starting with version 3.0.0 and prior to version 3.6.5, a malicious server administrator can gain full access to an end-to-end encrypted folder. They can decrypt files, recover the folder structure, and add new files.? Users should upgrade the Nextcloud Desktop client to 3.6.5 to receive a patch. No known workarounds are available. The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server. Starting with version 3.0.0 and prior to version 3.6.5, a malicious server administrator can gain full access to an end-to-end encrypted folder. They can decrypt files, recover the folder structure, and add new files. Users should upgrade the Nextcloud Desktop client to 3.6.5 to receive a patch. No known workarounds are available. -
Initial Analysis by [email protected]
Apr. 10, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N Changed Reference Type https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf No Types Assigned https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf Exploit, Technical Description, Third Party Advisory Changed Reference Type https://github.com/nextcloud/desktop/pull/5323 No Types Assigned https://github.com/nextcloud/desktop/pull/5323 Patch, Vendor Advisory Changed Reference Type https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jh3g-wpwv-cqgr No Types Assigned https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jh3g-wpwv-cqgr Vendor Advisory Added CPE Configuration OR *cpe:2.3:a:nextcloud:desktop:*:*:*:*:*:*:*:* versions from (including) 3.0.0 up to (excluding) 3.6.5
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-28998 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-28998
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.10 }} -0.00%
score
0.42571
percentile