Nextcloud Desktop Client up to 3.6.4 missing cryptographic step
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 5.4 | $0-$5k | 0.00 |
Summary
A vulnerability categorized as problematic has been discovered in Nextcloud Desktop Client up to 3.6.4. This affects an unknown function. Executing a manipulation can lead to missing cryptographic step. This vulnerability appears as CVE-2023-28998. The physical device can be targeted for the attack. There is no available exploit. It is advisable to upgrade the affected component.
Details
A vulnerability classified as problematic was found in Nextcloud Desktop Client up to 3.6.4 (Cloud Software). This vulnerability affects an unknown functionality. The manipulation with an unknown input leads to a missing cryptographic step vulnerability. The CWE definition for the vulnerability is CWE-325. The product does not implement a required step in a cryptographic algorithm, resulting in weaker encryption than advertised by the algorithm. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:
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 weakness was presented 04/04/2023 as GHSA-jh3g-wpwv-cqgr. The advisory is shared for download at github.com. This vulnerability was named CVE-2023-28998 since 03/29/2023. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1600.
Upgrading to version 3.6.5 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.
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Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.5VulDB Meta Temp Score: 5.4
VulDB Base Score: 3.6
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 6.1
NVD Vector: 🔍
CNA Base Score: 6.7
CNA Vector (GitHub, Inc.): 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Missing cryptographic stepCWE: CWE-325
CAPEC: 🔍
ATT&CK: 🔍
Physical: Yes
Local: Yes
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Desktop Client 3.6.5
Patch: github.com
Timeline
03/29/2023 🔍04/04/2023 🔍
04/04/2023 🔍
04/21/2023 🔍
Sources
Advisory: GHSA-jh3g-wpwv-cqgrStatus: Confirmed
CVE: CVE-2023-28998 (🔍)
GCVE (CVE): GCVE-0-2023-28998
GCVE (VulDB): GCVE-100-224848
Entry
Created: 04/04/2023 15:36Updated: 04/21/2023 20:53
Changes: 04/04/2023 15:36 (51), 04/21/2023 20:53 (11)
Complete: 🔍
Cache ID: 216::103
VulDB is the best source for vulnerability data and more expert information about this specific topic.
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