Information Exposure Affecting symfony/security-core package, versions >=2.8.0, <3.4.48 >=4.0.0, <4.4.23 >=5.0.0, <5.2.8
Snyk CVSS
Attack Complexity
High
Confidentiality
High
Threat Intelligence
EPSS
0.13% (48th
percentile)
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Test your applications- Snyk ID SNYK-PHP-SYMFONYSECURITYCORE-1291060
- published 12 May 2021
- disclosed 12 May 2021
- credit James Isaac, Mathias Brodala
How to fix?
Upgrade symfony/security-core to version 3.4.48, 4.4.23, 5.2.8 or higher.
Overview
Affected versions of this package are vulnerable to Information Exposure. The ability to enumerate users is possible without relevant permissions due to different exception messages, depending on whether the user exists or not. It is also possible to enumerate users by using a timing attack, by comparing time elapsed when authenticating an existing user and authenticating a non-existing user.