Access Control Bypass Affecting symfony/security-http package, versions >=4.2.0, <4.2.7
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Test your applications- Snyk ID SNYK-PHP-SYMFONYSECURITYHTTP-174491
- published 24 Apr 2019
- disclosed 17 Apr 2019
- credit Jon Cave
Introduced: 17 Apr 2019
CVE-2019-10911 Open this link in a new tabHow to fix?
Upgrade symfony/security-http
to version 4.2.7 or higher.
Overview
symfony/security-http is a provides an infrastructure for sophisticated authorization systems, which makes it possible to easily separate the actual authorization logic from so called user providers that hold the users credentials.
Affected versions of this package are vulnerable to Access Control Bypass. The generateCookieHash
function used to create a user's remember me cookie does not contain a delimiter during token generation. As such, an attacker could modify the remember me cookie and authenticate as a different user. This attack is only possible if the remember me functionality is enabled and the two users share a password hash or if the password hashes (e.g. UserInterface::getPassword()
) are null for all users (which is valid if passwords are checked by an external system, e.g. an SSO).