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CVE-2023-28835

3.5 · LOW

Nextcloud server is an open source home cloud implementation.

Published Mar 30, 2023CWE-338EPSS 0.54%

Overview

CVE-2023-28835 is a low-severity vulnerability. It was published on March 30, 2023 and has a CVSS 3.1 base score of 3.5 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.5, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Nextcloud server is an open source home cloud implementation. In affected versions the generated fallback password when creating a share was using a weak complexity random number generator, so when the sharer did not change it the password could be guessable to an attacker willing to brute force it. It is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. This issue only affects users who do not have a password policy enabled, so enabling a password policy is an effective mitigation for users unable to upgrade.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/nextcloud/security-advisories/security/advisories/GHSA-7w2p-rp9m-9xp9GitHubgithub.com/nextcloud/server/pull/36093GitHubgithub.com/nextcloud/security-advisories/security/advisories/GHSA-7w2p-rp9m-9xp9GitHubgithub.com/nextcloud/server/pull/36093

How CyberStrike helps

Frequently asked questions

What is CVE-2023-28835?

CVE-2023-28835 is a low-severity vulnerability. It was published on March 30, 2023 and has a CVSS 3.1 base score of 3.5 (LOW).

How severe is CVE-2023-28835?

This vulnerability has a CVSS 3.1 base score of 3.5, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-28835?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-28835?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-28835 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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