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CVE-2017-14251

8.8 · HIGH

Unrestricted File Upload vulnerability in the fileDenyPattern in sysext/core/Classes/Core/SystemEnvironmentBuilder.php in TYPO3 7.6.0 to 7.6.21 and 8.0.0 to 8.7.4 allows remote authenticated users…

Published Sep 11, 2017CWE-434EPSS 2.31%

Overview

CVE-2017-14251 is a high-severity vulnerability. It was published on September 11, 2017 and has a CVSS 3.0 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.0 base score of 8.8, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Unrestricted File Upload vulnerability in the fileDenyPattern in sysext/core/Classes/Core/SystemEnvironmentBuilder.php in TYPO3 7.6.0 to 7.6.21 and 8.0.0 to 8.7.4 allows remote authenticated users to upload files with a .pht extension and consequently execute arbitrary PHP code.

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

Refblog.emaze.net/2017/12/typo3-unrestricted-file-upload-remote.htmlRefwww.securityfocus.com/bid/100620Refwww.securitytracker.com/id/1039295Reftypo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2017-007/Refblog.emaze.net/2017/12/typo3-unrestricted-file-upload-remote.htmlRefwww.securityfocus.com/bid/100620Refwww.securitytracker.com/id/1039295Reftypo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2017-007/

How CyberStrike helps

Frequently asked questions

What is CVE-2017-14251?

CVE-2017-14251 is a high-severity vulnerability. It was published on September 11, 2017 and has a CVSS 3.0 base score of 8.8 (HIGH).

How severe is CVE-2017-14251?

This vulnerability has a CVSS 3.0 base score of 8.8, 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-2017-14251?

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-2017-14251?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-14251 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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