Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2017-18343

6.1 · MEDIUM

The debug handler in Symfony before v2.7.33, 2.8.x before v2.8.26, 3.x before v3.2.13, and 3.3.x before v3.3.6 has XSS via an array key during exception pretty printing in ExceptionHandler.php, as…

Published Jul 20, 2018CWE-79EPSS 6.11%

Overview

CVE-2017-18343 is a medium-severity vulnerability. It was published on July 20, 2018 and has a CVSS 3.0 base score of 6.1 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The debug handler in Symfony before v2.7.33, 2.8.x before v2.8.26, 3.x before v3.2.13, and 3.3.x before v3.3.6 has XSS via an array key during exception pretty printing in ExceptionHandler.php, as demonstrated by a /_debugbar/open?op=get URI. NOTE: the vendor's position is that this is not a vulnerability because the debug tools are not intended for production use. NOTE: the Symfony Debug component is used by Laravel Debugbar

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/barryvdh/laravel-debugbar/issues/850GitHubgithub.com/symfony/debug/pull/7/commits/e48bda29143bd1a83001780b4a78e483822d985cGitHubgithub.com/symfony/symfony/issues/27987GitHubgithub.com/symfony/symfony/pull/23684GitHubgithub.com/barryvdh/laravel-debugbar/issues/850GitHubgithub.com/symfony/debug/pull/7/commits/e48bda29143bd1a83001780b4a78e483822d985cGitHubgithub.com/symfony/symfony/issues/27987GitHubgithub.com/symfony/symfony/pull/23684

How CyberStrike helps

Frequently asked questions

What is CVE-2017-18343?

CVE-2017-18343 is a medium-severity vulnerability. It was published on July 20, 2018 and has a CVSS 3.0 base score of 6.1 (MEDIUM).

How severe is CVE-2017-18343?

This vulnerability has a CVSS 3.0 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2017-18343?

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-2017-18343?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-18343 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.

Related MEDIUM CVEs from 2017

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999