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CVE-2023-26435

5.0 · MEDIUM

It was possible to call filesystem and network references using the local LibreOffice instance using manipulated ODT documents.

Published Jun 20, 2023CWE-918EPSS 0.78%

Overview

CVE-2023-26435 is a medium-severity vulnerability. It was published on June 20, 2023 and has a CVSS 3.1 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

It was possible to call filesystem and network references using the local LibreOffice instance using manipulated ODT documents. Attackers could discover restricted network topology and services as well as including local files with read permissions of the open-xchange system user. This was limited to specific file-types, like images. We have improved existing content filters and validators to avoid including any local resources. No publicly available exploits are known.

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

Refpacketstormsecurity.com/files/173083/OX-App-Suite-SSRF-Resource-Consumption-Command-Injection.htmlRefseclists.org/fulldisclosure/2023/Jun/8Refdocumentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0002.jsonRefsoftware.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6219_7.10.6_2023-03-20.pdfRefpacketstormsecurity.com/files/173083/OX-App-Suite-SSRF-Resource-Consumption-Command-Injection.htmlRefseclists.org/fulldisclosure/2023/Jun/8Refdocumentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0002.jsonRefsoftware.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6219_7.10.6_2023-03-20.pdf

How CyberStrike helps

Frequently asked questions

What is CVE-2023-26435?

CVE-2023-26435 is a medium-severity vulnerability. It was published on June 20, 2023 and has a CVSS 3.1 base score of 5.0 (MEDIUM).

How severe is CVE-2023-26435?

This vulnerability has a CVSS 3.1 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-26435?

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-2023-26435?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-26435 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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