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CVE-2023-42819

8.9 · HIGH

JumpServer is an open source bastion host.

Published Sep 27, 2023CWE-22EPSS 2.21%

Overview

CVE-2023-42819 is a high-severity vulnerability. It was published on September 27, 2023 and has a CVSS 3.1 base score of 8.9 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.9, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

JumpServer is an open source bastion host. Logged-in users can access and modify the contents of any file on the system. A user can use the 'Job-Template' menu and create a playbook named 'test'. Get the playbook id from the detail page, like 'e0adabef-c38f-492d-bd92-832bacc3df5f'. An attacker can exploit the directory traversal flaw using the provided URL to access and retrieve the contents of the file. `https://jumpserver-ip/api/v1/ops/playbook/e0adabef-c38f-492d-bd92-832bacc3df5f/file/?key=../../../../../../../etc/passwd` a similar method to modify the file content is also present. This issue has been addressed in version 3.6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.

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/d0321a74f1713d031560341c8fd0a1859e6510d8GitHubgithub.com/jumpserver/jumpserver/security/advisories/GHSA-ghg2-2whp-6m33GitHubgithub.com/jumpserver/jumpserver/commit/d0321a74f1713d031560341c8fd0a1859e6510d8GitHubgithub.com/jumpserver/jumpserver/security/advisories/GHSA-ghg2-2whp-6m33

How CyberStrike helps

Frequently asked questions

What is CVE-2023-42819?

CVE-2023-42819 is a high-severity vulnerability. It was published on September 27, 2023 and has a CVSS 3.1 base score of 8.9 (HIGH).

How severe is CVE-2023-42819?

This vulnerability has a CVSS 3.1 base score of 8.9, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-42819?

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-2023-42819?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-42819 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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