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Information Exposure The advisory has been revoked - it doesn't affect any version of package symfony  (opens in a new tab)

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EPSS
1.64% (77th percentile)

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  • Snyk IDSNYK-UBUNTU2110-SYMFONY-1738782
  • published14 May 2021
  • disclosed13 May 2021
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Introduced: 13 May 2021

CVE-2021-21424  (opens in a new tab)
CWE-200  (opens in a new tab)

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:21.10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream symfony package and not the symfony package as distributed by Ubuntu.

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. The ability to enumerate users was possible without relevant permissions due to different handling depending on whether the user existed or not when attempting to use the switch users functionality. We now ensure that 403s are returned whether the user exists or not if a user cannot switch to a user or if the user does not exist. The patch for this issue is available for branch 3.4.

References