Access Restriction Bypass Affecting symfony/symfony package, versions >=2.7, <2.7.49 >=2.8, <2.8.44 >=3, <3.3.18 >=3.4, <3.4.14 >=4, <4.0.14 >=4.1, <4.1.3


0.0
medium

Snyk CVSS

    Attack Complexity Low
    Integrity High

    Threat Intelligence

    EPSS 87.78% (99th percentile)
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NVD
6.5 medium

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  • Snyk ID SNYK-PHP-SYMFONYSYMFONY-72257
  • published 2 Aug 2018
  • disclosed 2 Aug 2018
  • credit Michael Cullum

How to fix?

Upgrade symfony/symfony to versions 2.7.49, 2.8.44, 3.3.18, 3.4.14, 4.0.14, 4.1.3 or higher

Overview

symfony/symfony is a set of reusable PHP components.

Affected versions of this package are vulnerable to Access Restriction Bypass. It maintained support for (legacy) IIS headers (X-Original-URL or X-Rewrite-URL) that allowed users to override the path in a request URL. As a result, it allowed a user to access one URL but have Symfony return a different one which can bypass restrictions on higher level caches and web servers.