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CVE-2023-42820

7.0 · HIGH

JumpServer is an open source bastion host.

Published Sep 27, 2023CWE-200EPSS 6.30%

Overview

CVE-2023-42820 is a high-severity vulnerability. It was published on September 27, 2023 and has a CVSS 3.1 base score of 7.0 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

JumpServer is an open source bastion host. This vulnerability is due to exposing the random number seed to the API, potentially allowing the randomly generated verification codes to be replayed, which could lead to password resets. If MFA is enabled users are not affect. Users not using local authentication are also not affected. Users are advised to upgrade to either version 2.28.19 or to 3.6.5. There are no known workarounds or this issue.

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/jumpserver/jumpserver/commit/42337f0d00b2a8d45ef063eb5b7deeef81597da5GitHubgithub.com/jumpserver/jumpserver/security/advisories/GHSA-7prv-g565-82qpGitHubgithub.com/jumpserver/jumpserver/commit/42337f0d00b2a8d45ef063eb5b7deeef81597da5GitHubgithub.com/jumpserver/jumpserver/security/advisories/GHSA-7prv-g565-82qp

How CyberStrike helps

Frequently asked questions

What is CVE-2023-42820?

CVE-2023-42820 is a high-severity vulnerability. It was published on September 27, 2023 and has a CVSS 3.1 base score of 7.0 (HIGH).

How severe is CVE-2023-42820?

This vulnerability has a CVSS 3.1 base score of 7.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-42820?

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-2023-42820?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-42820 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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