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CVE-2017-17454

5.4 · MEDIUM

Mahara 16.10 before 16.10.7 and 17.04 before 17.04.5 and 17.10 before 17.10.2 have a Cross Site Scripting (XSS) vulnerability when a user enters invalid UTF-8 characters.

Published Feb 20, 2018CWE-79EPSS 0.69%

Overview

CVE-2017-17454 is a medium-severity vulnerability. It was published on February 20, 2018 and has a CVSS 3.0 base score of 5.4 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Mahara 16.10 before 16.10.7 and 17.04 before 17.04.5 and 17.10 before 17.10.2 have a Cross Site Scripting (XSS) vulnerability when a user enters invalid UTF-8 characters. These are now going to be discarded in Mahara along with NULL characters and invalid Unicode characters. Mahara will also avoid direct $_GET and $_POST usage where possible, and instead use param_exists() and the correct param_*() function to fetch the expected value.

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

Refbugs.launchpad.net/mahara/+bug/1732987Refmahara.org/interaction/forum/topic.php?id=8149Refreviews.mahara.org/#/c/8191/Refbugs.launchpad.net/mahara/+bug/1732987Refmahara.org/interaction/forum/topic.php?id=8149Refreviews.mahara.org/#/c/8191/

How CyberStrike helps

Frequently asked questions

What is CVE-2017-17454?

CVE-2017-17454 is a medium-severity vulnerability. It was published on February 20, 2018 and has a CVSS 3.0 base score of 5.4 (MEDIUM).

How severe is CVE-2017-17454?

This vulnerability has a CVSS 3.0 base score of 5.4, 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-2017-17454?

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-2017-17454?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-17454 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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