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CVE-2023-49105

9.8 · CRITICALActively Exploited

An issue was discovered in ownCloud owncloud/core before 10.13.1.

Published Nov 21, 2023CWE-287EPSS 42.92%

Overview

CVE-2023-49105 is a critical-severity vulnerability. It was published on November 21, 2023 and has a CVSS 3.1 base score of 9.8 (CRITICAL). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

An issue was discovered in ownCloud owncloud/core before 10.13.1. An attacker can access, modify, or delete any file without authentication if the username of a victim is known, and the victim has no signing-key configured. This occurs because pre-signed URLs can be accepted even when no signing-key is configured for the owner of the files. The earliest affected version is 10.6.0.

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

Refowncloud.com/security-advisories/webdav-api-authentication-bypass-using-pre-signed-urls/Refowncloud.org/securityRefowncloud.com/security-advisories/webdav-api-authentication-bypass-using-pre-signed-urls/Refowncloud.org/securityRefhunt.io/blog/chinese-speaking-operator-philippine-nuclear-naval-contractorCISAwww.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-49105

How CyberStrike helps

Frequently asked questions

What is CVE-2023-49105?

CVE-2023-49105 is a critical-severity vulnerability. It was published on November 21, 2023 and has a CVSS 3.1 base score of 9.8 (CRITICAL). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2023-49105?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-49105?

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-2023-49105?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-49105 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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