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Vulnerability Details :

CVE-2023-28999

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-04 Apr, 2023 | 12:51
Updated At-11 Feb, 2025 | 16:32
Rejected At-
Credits

Nextcloud: Lack of authenticity of metadata keys allows a malicious server to gain access to E2EE folders

Nextcloud is an open-source productivity platform. In Nextcloud Desktop client 3.0.0 until 3.8.0, Nextcloud Android app 3.13.0 until 3.25.0, and Nextcloud iOS app 3.0.5 until 4.8.0, 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.​ This issue is fixed in Nextcloud Desktop 3.8.0, Nextcloud Android 3.25.0, and Nextcloud iOS 4.8.0. No known workarounds are available.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:04 Apr, 2023 | 12:51
Updated At:11 Feb, 2025 | 16:32
Rejected At:
▼CVE Numbering Authority (CNA)
Nextcloud: Lack of authenticity of metadata keys allows a malicious server to gain access to E2EE folders

Nextcloud is an open-source productivity platform. In Nextcloud Desktop client 3.0.0 until 3.8.0, Nextcloud Android app 3.13.0 until 3.25.0, and Nextcloud iOS app 3.0.5 until 4.8.0, 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.​ This issue is fixed in Nextcloud Desktop 3.8.0, Nextcloud Android 3.25.0, and Nextcloud iOS 4.8.0. No known workarounds are available.

Affected Products
Vendor
Nextcloud GmbHnextcloud
Product
security-advisories
Versions
Affected
  • >= 3.0.0, < 3.8.0
  • >= 3.13.0, < 3.25.0
  • >= 3.0.5, < 4.8.0
Problem Types
TypeCWE IDDescription
CWECWE-325CWE-325: Missing Cryptographic Step
Type: CWE
CWE ID: CWE-325
Description: CWE-325: Missing Cryptographic Step
Metrics
VersionBase scoreBase severityVector
3.16.9MEDIUM
CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L
Version: 3.1
Base score: 6.9
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8
x_refsource_CONFIRM
https://github.com/nextcloud/desktop/pull/5560
x_refsource_MISC
https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf
x_refsource_MISC
Hyperlink: https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/nextcloud/desktop/pull/5560
Resource:
x_refsource_MISC
Hyperlink: https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
1. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8
x_refsource_CONFIRM
x_transferred
https://github.com/nextcloud/desktop/pull/5560
x_refsource_MISC
x_transferred
https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf
x_refsource_MISC
x_transferred
Hyperlink: https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8
Resource:
x_refsource_CONFIRM
x_transferred
Hyperlink: https://github.com/nextcloud/desktop/pull/5560
Resource:
x_refsource_MISC
x_transferred
Hyperlink: https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf
Resource:
x_refsource_MISC
x_transferred
2. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:04 Apr, 2023 | 13:15
Updated At:07 Nov, 2023 | 04:10

Nextcloud is an open-source productivity platform. In Nextcloud Desktop client 3.0.0 until 3.8.0, Nextcloud Android app 3.13.0 until 3.25.0, and Nextcloud iOS app 3.0.5 until 4.8.0, 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.​ This issue is fixed in Nextcloud Desktop 3.8.0, Nextcloud Android 3.25.0, and Nextcloud iOS 4.8.0. No known workarounds are available.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.16.4MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L
Secondary3.16.9MEDIUM
CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L
Type: Primary
Version: 3.1
Base score: 6.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L
Type: Secondary
Version: 3.1
Base score: 6.9
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L
CPE Matches
Nextcloud GmbH
nextcloud
>>desktop>>Versions from 3.0.0(inclusive) to 3.8.0(exclusive)
cpe:2.3:a:nextcloud:desktop:*:*:*:*:*:*:*:*
Nextcloud GmbH
nextcloud
>>nextcloud>>Versions from 3.0.5(inclusive) to 4.8.0(exclusive)
cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:iphone_os:*:*:*
Nextcloud GmbH
nextcloud
>>nextcloud>>Versions from 3.13.0(inclusive) to 3.25.0(exclusive)
cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:android:*:*:*
Weaknesses
CWE IDTypeSource
CWE-311Primarynvd@nist.gov
CWE-325Secondarysecurity-advisories@github.com
CWE ID: CWE-311
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-325
Type: Secondary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdfsecurity-advisories@github.com
Exploit
Technical Description
Third Party Advisory
https://github.com/nextcloud/desktop/pull/5560security-advisories@github.com
Patch
Vendor Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8security-advisories@github.com
Vendor Advisory
Hyperlink: https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf
Source: security-advisories@github.com
Resource:
Exploit
Technical Description
Third Party Advisory
Hyperlink: https://github.com/nextcloud/desktop/pull/5560
Source: security-advisories@github.com
Resource:
Patch
Vendor Advisory
Hyperlink: https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8875-wxww-3rr8
Source: security-advisories@github.com
Resource:
Vendor Advisory

Change History

0
Information is not available yet

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Details not found