Is CVE-2023-28834 in the CISA KEV catalog?

No. CVE-2023-28834 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-28834?

CVE-2023-28834 has a CVSS v3 base score of 3.5 (LOW).

What is the EPSS score for CVE-2023-28834?

CVE-2023-28834 has an EPSS score of 0.81% (52th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-28834?

Upgrade nextcloud server to 25.0.4 or later.

CVE & CISA-KEV Catalog

CVE-2023-28834

LOW

3.5

CVSS v3

NVD

Description

Nextcloud Server is an open source personal cloud server. Nextcloud Server 24.0.0 until 24.0.6 and 25.0.0 until 25.0.4, as well as Nextcloud Enterprise Server 23.0.0 until 23.0.11, 24.0.0 until 24.0.6, and 25.0.0 until 25.0.4, have an information disclosure vulnerability. A user was able to get the full data directory path of the Nextcloud server from an API endpoint. By itself this information is not problematic as it can also be guessed for most common setups, but it could speed up other unknown attacks in the future if the information is known. Nextcloud Server 24.0.6 and 25.0.4 and Nextcloud Enterprise Server 23.0.11, 24.0.6, and 25.0.4 contain patches for this issue. There are no known workarounds.

CWE-212

How to fix

Remediation Available

nextcloud serverNVD

Affected:>= 25.0.0, < 25.0.4Fixed in:25.0.4CVE-2023-28834derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

Exploit Intelligence

0.81%probability of exploitation in 30 days

52ndpercentile

Moderate risk: more likely to be exploited than 52% of all known CVEs.

References

Patch2

Exploit1

github.com

Vendor Advisory1

github.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.