Information Exposure

Affecting typo3/cms-core package, versions >=11.0.0, <11.1.1 || >=10.0.0, <10.4.14 || <9.5.25

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Overview

typo3/cms-core is a free open source enterprise content management system.

Affected versions of this package are vulnerable to Information Exposure. User session identifiers are stored in cleartext - without processing of additional cryptographic hashing algorithms. This vulnerability cannot be exploited directly and occurs in combination with a chained attack.

Remediation

Upgrade typo3/cms-core to version 11.1.1, 10.4.14, 9.5.25 or higher.

References

CVSS Score

4.8
medium severity
  • Attack Vector
    Network
  • Attack Complexity
    High
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    Low
  • Integrity
    Low
  • Availability
    None
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Credit
Oliver Hader
CVE
CVE-2021-21339
CWE
CWE-200
Snyk ID
SNYK-PHP-TYPO3CMSCORE-1086570
Disclosed
17 Mar, 2021
Published
18 Mar, 2021