CVE-2023-28997
Nextcloud Desktop: Initialization vector reuse in E2EE allows malicious server admin to break, manipulate, access files
Severity Score
6.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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 recover and modify the contents of end-to-end encrypted files. Users should upgrade the Nextcloud Desktop client to 3.6.5 to receive a patch. No known workarounds are available.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2023-03-29 CVE Reserved
- 2023-04-04 CVE Published
- 2024-08-02 CVE Updated
- 2024-08-02 First Exploit
- 2024-10-25 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-323: Reusing a Nonce, Key Pair in Encryption
CAPEC
References (3)
URL | Tag | Source |
---|
URL | Date | SRC |
---|---|---|
https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf | 2024-08-02 |
URL | Date | SRC |
---|---|---|
https://github.com/nextcloud/desktop/pull/5324 | 2023-04-10 |
URL | Date | SRC |
---|---|---|
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4p33-rw27-j5fc | 2023-04-10 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Nextcloud Search vendor "Nextcloud" | Desktop Search vendor "Nextcloud" for product "Desktop" | >= 3.0.0 < 3.6.5 Search vendor "Nextcloud" for product "Desktop" and version " >= 3.0.0 < 3.6.5" | - |
Affected
|